diff --git a/fluxer_api/src/api/admin/services/AdminSearchService.ts b/fluxer_api/src/api/admin/services/AdminSearchService.ts
index 6c9340e8e..801b1c62c 100644
--- a/fluxer_api/src/api/admin/services/AdminSearchService.ts
+++ b/fluxer_api/src/api/admin/services/AdminSearchService.ts
@@ -5,6 +5,7 @@ import {InputValidationError} from '@fluxer/errors/src/domains/core/InputValidat
 import type {WorkerJobPayload} from '@pkgs/worker/src/contracts/WorkerTypes';
 import type {ApiContext} from '../../ApiContext';
 import {createGuildID, createUserID, type UserID} from '../../BrandedTypes';
+import {isSyntheticUserId} from '../../constants/Core';
 import type {IGuildRepositoryAggregate} from '../../guild/repositories/IGuildRepositoryAggregate';
 import {Logger} from '../../Logger';
 import {getGuildSearchService, getUserSearchService} from '../../SearchFactory';
@@ -129,12 +130,11 @@ export class AdminSearchService {
 			throw new FeatureTemporarilyDisabledError();
 		}
 		const query = data.query?.trim() || '';
-		const isIdQuery = /^\d+$/.test(query);
+		const directUserId = /^\d+$/.test(query) ? createUserID(BigInt(query)) : null;
+		const canResolveDirectUser = directUserId !== null && !isSyntheticUserId(directUserId) && data.offset === 0;
 		const [searchResult, directUser] = await Promise.all([
 			userSearchService.search(query, {}, {limit: data.limit, offset: data.offset}),
-			isIdQuery && data.offset === 0
-				? userRepository.findUnique(createUserID(BigInt(query))).catch(() => null)
-				: Promise.resolve(null),
+			canResolveDirectUser ? userRepository.findUnique(directUserId).catch(() => null) : Promise.resolve(null),
 		]);
 		const {hits, total} = searchResult;
 		const userIds = hits.map((hit) => createUserID(BigInt(hit.id)));
diff --git a/fluxer_api/src/api/admin/services/AdminUserLookupService.ts b/fluxer_api/src/api/admin/services/AdminUserLookupService.ts
index ee17e3e03..2aacbfbcc 100644
--- a/fluxer_api/src/api/admin/services/AdminUserLookupService.ts
+++ b/fluxer_api/src/api/admin/services/AdminUserLookupService.ts
@@ -3,6 +3,7 @@
 import type {LookupUserRequest} from '@fluxer/schema/src/domains/admin/AdminUserSchemas';
 import type {ApiContext} from '../../ApiContext';
 import {createUserID} from '../../BrandedTypes';
+import {isSyntheticUserId} from '../../constants/Core';
 import {Logger} from '../../Logger';
 import {mapUserToAdminResponse} from '../models/UserTypes';
 
@@ -32,7 +33,7 @@ export class AdminUserLookupService {
 		} else if (/^\d+$/.test(query)) {
 			try {
 				const userId = createUserID(BigInt(query));
-				user = await userRepository.findUnique(userId);
+				user = isSyntheticUserId(userId) ? null : await userRepository.findUnique(userId);
 			} catch (error) {
 				Logger.debug({query, error}, 'Failed to lookup user by numeric ID, invalid ID format');
 				user = null;
diff --git a/fluxer_api/src/api/admin/tests/AdminUserDirectory.test.ts b/fluxer_api/src/api/admin/tests/AdminUserDirectory.test.ts
index 4651122b0..71e8a7987 100644
--- a/fluxer_api/src/api/admin/tests/AdminUserDirectory.test.ts
+++ b/fluxer_api/src/api/admin/tests/AdminUserDirectory.test.ts
@@ -21,6 +21,8 @@ interface UserListResponse {
 	total: number;
 }
 
+const SYNTHETIC_USER_IDS = ['0', '1'];
+
 async function setLastActiveIp(harness: ApiTestHarness, token: string, ip: string): Promise<void> {
 	await createBuilder(harness, `${token}`)
 		.get('/users/@me')
@@ -170,5 +172,35 @@ describe('Admin user directory', () => {
 			expect(result.users.map((user) => user.id)).toEqual([target.userId]);
 			expect(result.users[0]?.email).toBeNull();
 		});
+		test.each(SYNTHETIC_USER_IDS)('omits the synthetic account %s from the resolve selector', async (userId) => {
+			const admin = await createTestAccount(harness);
+			await setUserACLs(harness, admin, [AdminACLs.AUTHENTICATE, AdminACLs.USER_LOOKUP]);
+			const result = await createBuilder<UserListResponse>(harness, `${admin.token}`)
+				.get(`/admin/users?resolve=${userId}`)
+				.expect(HTTP_STATUS.OK)
+				.execute();
+			expect(result.users).toEqual([]);
+			expect(result.total).toBe(0);
+		});
+		test.each(SYNTHETIC_USER_IDS)('omits the synthetic account %s from the q selector', async (userId) => {
+			const admin = await createTestAccount(harness);
+			await setUserACLs(harness, admin, [AdminACLs.AUTHENTICATE, AdminACLs.USER_LOOKUP]);
+			const result = await createBuilder<UserListResponse>(harness, `${admin.token}`)
+				.get(`/admin/users?q=${userId}`)
+				.expect(HTTP_STATUS.OK)
+				.execute();
+			expect(result.users.map((user) => user.id)).not.toContain(userId);
+		});
+	});
+	describe('GET /admin/users/:user_id', () => {
+		test.each(SYNTHETIC_USER_IDS)('reports no user for the synthetic account %s', async (userId) => {
+			const admin = await createTestAccount(harness);
+			await setUserACLs(harness, admin, [AdminACLs.AUTHENTICATE, AdminACLs.USER_LOOKUP]);
+			const result = await createBuilder<UserListResponse>(harness, `${admin.token}`)
+				.get(`/admin/users/${userId}`)
+				.expect(HTTP_STATUS.OK)
+				.execute();
+			expect(result.users).toEqual([]);
+		});
 	});
 });
diff --git a/fluxer_api/src/api/constants/Core.ts b/fluxer_api/src/api/constants/Core.ts
index bbf750b33..b16d96a91 100644
--- a/fluxer_api/src/api/constants/Core.ts
+++ b/fluxer_api/src/api/constants/Core.ts
@@ -1,5 +1,10 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
-import {createUserID} from '../BrandedTypes';
+import {DELETED_USER_ID} from '@fluxer/constants/src/UserConstants';
+import {createUserID, type UserID} from '../BrandedTypes';
 
 export const SYSTEM_USER_ID = createUserID(0n);
+
+export function isSyntheticUserId(userId: UserID): boolean {
+	return userId === SYSTEM_USER_ID || userId === DELETED_USER_ID;
+}