diff --git a/apps/web/src/App.tsx b/apps/web/src/App.tsx
index a4b7885..5692bba 100644
--- a/apps/web/src/App.tsx
+++ b/apps/web/src/App.tsx
@@ -431,8 +431,8 @@ export function App() {
 							name,
 							ac,
 							maxHp,
-							color,
-							icon,
+							color: color ?? null,
+							icon: icon ?? null,
 						});
 					} else {
 						createPlayerCharacter(name, ac, maxHp, color, icon);
diff --git a/apps/web/src/components/action-bar.tsx b/apps/web/src/components/action-bar.tsx
index 631491f..ecae3eb 100644
--- a/apps/web/src/components/action-bar.tsx
+++ b/apps/web/src/components/action-bar.tsx
@@ -95,9 +95,12 @@ function AddModeSuggestions({
 						</div>
 						<ul>
 							{pcMatches.map((pc) => {
-								const PcIcon = PLAYER_ICON_MAP[pc.icon as PlayerIcon];
-								const pcColor =
-									PLAYER_COLOR_HEX[pc.color as keyof typeof PLAYER_COLOR_HEX];
+								const PcIcon = pc.icon
+									? PLAYER_ICON_MAP[pc.icon as PlayerIcon]
+									: undefined;
+								const pcColor = pc.color
+									? PLAYER_COLOR_HEX[pc.color as keyof typeof PLAYER_COLOR_HEX]
+									: undefined;
 								return (
 									<li key={pc.id}>
 										<button
diff --git a/apps/web/src/components/color-palette.tsx b/apps/web/src/components/color-palette.tsx
index fd049b3..422ad8b 100644
--- a/apps/web/src/components/color-palette.tsx
+++ b/apps/web/src/components/color-palette.tsx
@@ -16,7 +16,7 @@ export function ColorPalette({ value, onChange }: ColorPaletteProps) {
 				<button
 					key={color}
 					type="button"
-					onClick={() => onChange(color)}
+					onClick={() => onChange(value === color ? "" : color)}
 					className={cn(
 						"h-8 w-8 rounded-full transition-all",
 						value === color
diff --git a/apps/web/src/components/create-player-modal.tsx b/apps/web/src/components/create-player-modal.tsx
index 74a691f..c93b077 100644
--- a/apps/web/src/components/create-player-modal.tsx
+++ b/apps/web/src/components/create-player-modal.tsx
@@ -13,8 +13,8 @@ interface CreatePlayerModalProps {
 		name: string,
 		ac: number,
 		maxHp: number,
-		color: string,
-		icon: string,
+		color: string | undefined,
+		icon: string | undefined,
 	) => void;
 	playerCharacter?: PlayerCharacter;
 }
@@ -40,14 +40,14 @@ export function CreatePlayerModal({
 				setName(playerCharacter.name);
 				setAc(String(playerCharacter.ac));
 				setMaxHp(String(playerCharacter.maxHp));
-				setColor(playerCharacter.color);
-				setIcon(playerCharacter.icon);
+				setColor(playerCharacter.color ?? "");
+				setIcon(playerCharacter.icon ?? "");
 			} else {
 				setName("");
 				setAc("10");
 				setMaxHp("10");
-				setColor("blue");
-				setIcon("sword");
+				setColor("");
+				setIcon("");
 			}
 			setError("");
 		}
@@ -81,7 +81,7 @@ export function CreatePlayerModal({
 			setError("Max HP must be at least 1");
 			return;
 		}
-		onSave(trimmed, acNum, hpNum, color, icon);
+		onSave(trimmed, acNum, hpNum, color || undefined, icon || undefined);
 		onClose();
 	};
 
diff --git a/apps/web/src/components/icon-grid.tsx b/apps/web/src/components/icon-grid.tsx
index 50cc7db..3096fce 100644
--- a/apps/web/src/components/icon-grid.tsx
+++ b/apps/web/src/components/icon-grid.tsx
@@ -19,7 +19,7 @@ export function IconGrid({ value, onChange }: IconGridProps) {
 					<button
 						key={iconId}
 						type="button"
-						onClick={() => onChange(iconId)}
+						onClick={() => onChange(value === iconId ? "" : iconId)}
 						className={cn(
 							"flex h-9 w-9 items-center justify-center rounded-md transition-all",
 							value === iconId
diff --git a/apps/web/src/components/player-management.tsx b/apps/web/src/components/player-management.tsx
index 4489538..259c19d 100644
--- a/apps/web/src/components/player-management.tsx
+++ b/apps/web/src/components/player-management.tsx
@@ -1,8 +1,4 @@
-import type {
-	PlayerCharacter,
-	PlayerCharacterId,
-	PlayerIcon,
-} from "@initiative/domain";
+import type { PlayerCharacter, PlayerCharacterId } from "@initiative/domain";
 import { Pencil, Plus, Trash2, X } from "lucide-react";
 import { useEffect } from "react";
 import { PLAYER_COLOR_HEX, PLAYER_ICON_MAP } from "./player-icon-map";
@@ -73,9 +69,8 @@ export function PlayerManagement({
 				) : (
 					<div className="flex flex-col gap-1">
 						{characters.map((pc) => {
-							const Icon = PLAYER_ICON_MAP[pc.icon as PlayerIcon];
-							const color =
-								PLAYER_COLOR_HEX[pc.color as keyof typeof PLAYER_COLOR_HEX];
+							const Icon = pc.icon ? PLAYER_ICON_MAP[pc.icon] : undefined;
+							const color = pc.color ? PLAYER_COLOR_HEX[pc.color] : undefined;
 							return (
 								<div
 									key={pc.id}
diff --git a/apps/web/src/hooks/use-player-characters.ts b/apps/web/src/hooks/use-player-characters.ts
index e3bfa7e..9b30c24 100644
--- a/apps/web/src/hooks/use-player-characters.ts
+++ b/apps/web/src/hooks/use-player-characters.ts
@@ -26,8 +26,8 @@ interface EditFields {
 	readonly name?: string;
 	readonly ac?: number;
 	readonly maxHp?: number;
-	readonly color?: string;
-	readonly icon?: string;
+	readonly color?: string | null;
+	readonly icon?: string | null;
 }
 
 export function usePlayerCharacters() {
@@ -51,7 +51,13 @@ export function usePlayerCharacters() {
 	}, []);
 
 	const createCharacter = useCallback(
-		(name: string, ac: number, maxHp: number, color: string, icon: string) => {
+		(
+			name: string,
+			ac: number,
+			maxHp: number,
+			color: string | undefined,
+			icon: string | undefined,
+		) => {
 			const id = generatePcId();
 			const result = createPlayerCharacterUseCase(
 				makeStore(),
diff --git a/apps/web/src/persistence/player-character-storage.ts b/apps/web/src/persistence/player-character-storage.ts
index b412cdf..7fe394b 100644
--- a/apps/web/src/persistence/player-character-storage.ts
+++ b/apps/web/src/persistence/player-character-storage.ts
@@ -15,6 +15,13 @@ export function savePlayerCharacters(characters: PlayerCharacter[]): void {
 	}
 }
 
+function isValidOptionalMember(
+	value: unknown,
+	valid: ReadonlySet<string>,
+): boolean {
+	return value === undefined || (typeof value === "string" && valid.has(value));
+}
+
 function rehydrateCharacter(raw: unknown): PlayerCharacter | null {
 	if (typeof raw !== "object" || raw === null || Array.isArray(raw))
 		return null;
@@ -35,10 +42,8 @@ function rehydrateCharacter(raw: unknown): PlayerCharacter | null {
 		entry.maxHp < 1
 	)
 		return null;
-	if (typeof entry.color !== "string" || !VALID_PLAYER_COLORS.has(entry.color))
-		return null;
-	if (typeof entry.icon !== "string" || !VALID_PLAYER_ICONS.has(entry.icon))
-		return null;
+	if (!isValidOptionalMember(entry.color, VALID_PLAYER_COLORS)) return null;
+	if (!isValidOptionalMember(entry.icon, VALID_PLAYER_ICONS)) return null;
 
 	return {
 		id: playerCharacterId(entry.id),
diff --git a/packages/application/src/create-player-character-use-case.ts b/packages/application/src/create-player-character-use-case.ts
index ee14a15..95b5b2d 100644
--- a/packages/application/src/create-player-character-use-case.ts
+++ b/packages/application/src/create-player-character-use-case.ts
@@ -13,8 +13,8 @@ export function createPlayerCharacterUseCase(
 	name: string,
 	ac: number,
 	maxHp: number,
-	color: string,
-	icon: string,
+	color: string | undefined,
+	icon: string | undefined,
 ): DomainEvent[] | DomainError {
 	const characters = store.getAll();
 	const result = createPlayerCharacter(
diff --git a/packages/application/src/edit-player-character-use-case.ts b/packages/application/src/edit-player-character-use-case.ts
index 1877877..dbf6df5 100644
--- a/packages/application/src/edit-player-character-use-case.ts
+++ b/packages/application/src/edit-player-character-use-case.ts
@@ -11,8 +11,8 @@ interface EditFields {
 	readonly name?: string;
 	readonly ac?: number;
 	readonly maxHp?: number;
-	readonly color?: string;
-	readonly icon?: string;
+	readonly color?: string | null;
+	readonly icon?: string | null;
 }
 
 export function editPlayerCharacterUseCase(
diff --git a/packages/domain/src/__tests__/create-player-character.test.ts b/packages/domain/src/__tests__/create-player-character.test.ts
index b14931e..c87d02e 100644
--- a/packages/domain/src/__tests__/create-player-character.test.ts
+++ b/packages/domain/src/__tests__/create-player-character.test.ts
@@ -219,6 +219,49 @@ describe("createPlayerCharacter", () => {
 		}
 	});
 
+	it("allows undefined color", () => {
+		const result = createPlayerCharacter(
+			[],
+			id,
+			"Test",
+			10,
+			50,
+			undefined,
+			"sword",
+		);
+		if (isDomainError(result)) throw new Error(result.message);
+		expect(result.characters[0].color).toBeUndefined();
+	});
+
+	it("allows undefined icon", () => {
+		const result = createPlayerCharacter(
+			[],
+			id,
+			"Test",
+			10,
+			50,
+			"blue",
+			undefined,
+		);
+		if (isDomainError(result)) throw new Error(result.message);
+		expect(result.characters[0].icon).toBeUndefined();
+	});
+
+	it("allows both color and icon undefined", () => {
+		const result = createPlayerCharacter(
+			[],
+			id,
+			"Test",
+			10,
+			50,
+			undefined,
+			undefined,
+		);
+		if (isDomainError(result)) throw new Error(result.message);
+		expect(result.characters[0].color).toBeUndefined();
+		expect(result.characters[0].icon).toBeUndefined();
+	});
+
 	it("emits exactly one event on success", () => {
 		const { events } = success([], "Test", 10, 50);
 		expect(events).toHaveLength(1);
diff --git a/packages/domain/src/__tests__/edit-player-character.test.ts b/packages/domain/src/__tests__/edit-player-character.test.ts
index caff24f..4845338 100644
--- a/packages/domain/src/__tests__/edit-player-character.test.ts
+++ b/packages/domain/src/__tests__/edit-player-character.test.ts
@@ -106,6 +106,22 @@ describe("editPlayerCharacter", () => {
 		expect(result.events).toHaveLength(1);
 	});
 
+	it("clears color when set to null", () => {
+		const result = editPlayerCharacter([makePC({ color: "green" })], id, {
+			color: null,
+		});
+		if (isDomainError(result)) throw new Error(result.message);
+		expect(result.characters[0].color).toBeUndefined();
+	});
+
+	it("clears icon when set to null", () => {
+		const result = editPlayerCharacter([makePC({ icon: "sword" })], id, {
+			icon: null,
+		});
+		if (isDomainError(result)) throw new Error(result.message);
+		expect(result.characters[0].icon).toBeUndefined();
+	});
+
 	it("event includes old and new name", () => {
 		const result = editPlayerCharacter([makePC()], id, { name: "Strider" });
 		if (isDomainError(result)) throw new Error(result.message);
diff --git a/packages/domain/src/create-player-character.ts b/packages/domain/src/create-player-character.ts
index 455459f..a0e9a13 100644
--- a/packages/domain/src/create-player-character.ts
+++ b/packages/domain/src/create-player-character.ts
@@ -20,8 +20,8 @@ export function createPlayerCharacter(
 	name: string,
 	ac: number,
 	maxHp: number,
-	color: string,
-	icon: string,
+	color: string | undefined,
+	icon: string | undefined,
 ): CreatePlayerCharacterSuccess | DomainError {
 	const trimmed = name.trim();
 
@@ -49,7 +49,7 @@ export function createPlayerCharacter(
 		};
 	}
 
-	if (!VALID_PLAYER_COLORS.has(color)) {
+	if (color !== undefined && !VALID_PLAYER_COLORS.has(color)) {
 		return {
 			kind: "domain-error",
 			code: "invalid-color",
@@ -57,7 +57,7 @@ export function createPlayerCharacter(
 		};
 	}
 
-	if (!VALID_PLAYER_ICONS.has(icon)) {
+	if (icon !== undefined && !VALID_PLAYER_ICONS.has(icon)) {
 		return {
 			kind: "domain-error",
 			code: "invalid-icon",
diff --git a/packages/domain/src/edit-player-character.ts b/packages/domain/src/edit-player-character.ts
index 610127f..4679f0f 100644
--- a/packages/domain/src/edit-player-character.ts
+++ b/packages/domain/src/edit-player-character.ts
@@ -18,8 +18,8 @@ interface EditFields {
 	readonly name?: string;
 	readonly ac?: number;
 	readonly maxHp?: number;
-	readonly color?: string;
-	readonly icon?: string;
+	readonly color?: string | null;
+	readonly icon?: string | null;
 }
 
 function validateFields(fields: EditFields): DomainError | null {
@@ -50,14 +50,22 @@ function validateFields(fields: EditFields): DomainError | null {
 			message: "Max HP must be a positive integer",
 		};
 	}
-	if (fields.color !== undefined && !VALID_PLAYER_COLORS.has(fields.color)) {
+	if (
+		fields.color !== undefined &&
+		fields.color !== null &&
+		!VALID_PLAYER_COLORS.has(fields.color)
+	) {
 		return {
 			kind: "domain-error",
 			code: "invalid-color",
 			message: `Invalid color: ${fields.color}`,
 		};
 	}
-	if (fields.icon !== undefined && !VALID_PLAYER_ICONS.has(fields.icon)) {
+	if (
+		fields.icon !== undefined &&
+		fields.icon !== null &&
+		!VALID_PLAYER_ICONS.has(fields.icon)
+	) {
 		return {
 			kind: "domain-error",
 			code: "invalid-icon",
@@ -78,11 +86,11 @@ function applyFields(
 		maxHp: fields.maxHp !== undefined ? fields.maxHp : existing.maxHp,
 		color:
 			fields.color !== undefined
-				? (fields.color as PlayerCharacter["color"])
+				? ((fields.color as PlayerCharacter["color"]) ?? undefined)
 				: existing.color,
 		icon:
 			fields.icon !== undefined
-				? (fields.icon as PlayerCharacter["icon"])
+				? ((fields.icon as PlayerCharacter["icon"]) ?? undefined)
 				: existing.icon,
 	};
 }
diff --git a/packages/domain/src/player-character-types.ts b/packages/domain/src/player-character-types.ts
index ef1b175..6bf5721 100644
--- a/packages/domain/src/player-character-types.ts
+++ b/packages/domain/src/player-character-types.ts
@@ -72,8 +72,8 @@ export interface PlayerCharacter {
 	readonly name: string;
 	readonly ac: number;
 	readonly maxHp: number;
-	readonly color: PlayerColor;
-	readonly icon: PlayerIcon;
+	readonly color?: PlayerColor;
+	readonly icon?: PlayerIcon;
 }
 
 export interface PlayerCharacterList {