diff --git a/packages/functions/transform/src/set-forge-users.test.ts b/packages/functions/transform/src/set-forge-users.test.ts
new file mode 100644
index 000000000..a5ee3b7b1
--- /dev/null
+++ b/packages/functions/transform/src/set-forge-users.test.ts
@@ -0,0 +1,114 @@
+import { describe, expect, test } from "@jest/globals";
+
+import { drizzle } from "drizzle-orm/libsql";
+import { migrate } from "drizzle-orm/libsql/migrator";
+import { createClient } from "@libsql/client";
+import { and, eq, inArray } from "drizzle-orm";
+import fs from "fs";
+
+import * as extract from "@acme/extract-schema";
+import * as transform from "@acme/transform-schema";
+import type { Context } from "./config";
+import type { SetForgeUsersExtractEntities, SetForgeUsersTransformEntities } from "./set-forge-users";
+import { setForgeUsers } from "./set-forge-users";
+
+let extractSqlite: ReturnType<typeof createClient>;
+let extractDb: ReturnType<typeof drizzle>;
+let transformSqlite: ReturnType<typeof createClient>;
+let transformDb: ReturnType<typeof drizzle>;
+let context: Context<SetForgeUsersExtractEntities, SetForgeUsersTransformEntities>;
+
+const extractDbName = 'extract-set-forge-users';
+const transformDbName = 'transform-set-forge-users';
+
+beforeAll(async () => {
+  extractSqlite = createClient({
+    url: `file:${extractDbName}`,
+  });
+  extractDb = drizzle(extractSqlite);
+
+  transformSqlite = createClient({
+    url: `file:${transformDbName}`,
+  });
+  transformDb = drizzle(transformSqlite);
+
+  await migrate(extractDb, { migrationsFolder: "../../../migrations/extract" });
+  await migrate(transformDb, { migrationsFolder: "../../../migrations/transform" });
+
+  context = {
+    extract: {
+      db: extractDb,
+      entities: {
+        members: extract.members,
+        mergeRequestNotes: extract.mergeRequestNotes
+      }
+    },
+    transform: {
+      db: transformDb,
+      entities: {
+        forgeUsers: transform.forgeUsers
+      }
+    }
+  };
+});
+
+afterAll(() => {
+  extractSqlite.close();
+  transformSqlite.close();
+  fs.unlinkSync(extractDbName);
+  fs.unlinkSync(transformDbName);
+});
+
+beforeEach(async () => {
+  await extractDb.insert(context.extract.entities.members).values([
+    {
+      id: 1, username: 'deki', externalId: 1000, forgeType: 'github', name: 'Deki', email: null,
+    },
+    {
+      id: 2, username: 'deki', externalId: 1001, forgeType: 'github', name: null, email: null,
+    },
+    {
+      id: 3, username: 'deki', externalId: 1002, forgeType: 'github', name: 'Deki', email: null,
+    },
+  ]).run();
+});
+
+afterEach(async () => {
+  await extractDb.delete(context.extract.entities.members).run();
+  await transformDb.delete(context.transform.entities.forgeUsers).run();
+});
+
+describe('set-forge-users', () => {
+  describe('setMergeRequests', () => {
+    test('should insert values into db', async () => {
+      const extractMemberIds = [1, 2, 3];
+      await setForgeUsers({ extractMemberIds }, context);
+
+      const transformMergeRequestRows = await transformDb
+        .select({
+          externalId: context.transform.entities.forgeUsers.externalId,
+          name: context.transform.entities.forgeUsers.name,
+        })
+        .from(context.transform.entities.forgeUsers)
+        .where(
+          and(
+            inArray(context.transform.entities.forgeUsers.externalId, [1000, 1001, 1002]),
+            eq(context.transform.entities.forgeUsers.forgeType, "github")
+          )
+        ).all();
+
+
+      expect(transformMergeRequestRows.find((row) => row.externalId === 1000)).toEqual({
+        externalId: 1000, name: 'Deki',
+      });
+
+      expect(transformMergeRequestRows.find((row) => row.externalId === 1001)).toEqual({
+        externalId: 1001, name: 'deki',
+      });
+
+      expect(transformMergeRequestRows.find((row) => row.externalId === 1002)).toEqual({
+        externalId: 1002, name: 'Deki',
+      });
+    });
+  });
+});
diff --git a/packages/functions/transform/src/set-forge-users.ts b/packages/functions/transform/src/set-forge-users.ts
new file mode 100644
index 000000000..8886c8be9
--- /dev/null
+++ b/packages/functions/transform/src/set-forge-users.ts
@@ -0,0 +1,52 @@
+import { inArray } from "drizzle-orm";
+import type { ExtractEntities, TransformEntities, TransformFunction } from "./config";
+import type { NewForgeUser } from "@acme/transform-schema";
+
+export type SetForgeUsersInput = {
+  extractMemberIds?: number[];
+}
+export type SetForgeUsersOutput = void;
+export type SetForgeUsersExtractEntities = Pick<ExtractEntities, 'members' | 'mergeRequestNotes'>;
+export type SetForgeUsersTransformEntities = Pick<TransformEntities, 'forgeUsers'>;
+
+export type SetForgeUsersFunction = TransformFunction<SetForgeUsersInput, SetForgeUsersOutput, SetForgeUsersExtractEntities, SetForgeUsersTransformEntities>;
+
+export const setForgeUsers: SetForgeUsersFunction = async (
+  { extractMemberIds },
+  { extract, transform }
+) => {
+
+  if (!extractMemberIds) return;
+
+  const extractForgeUsers = (await extract.db.select({
+    externalId: extract.entities.members.externalId,
+    forgeType: extract.entities.members.forgeType,
+    name: extract.entities.members.name,
+    username: extract.entities.members.username,
+  }).from(extract.entities.members)
+    .where(inArray(extract.entities.members.id, extractMemberIds))
+    .all()).map(user => ({
+      ...user,
+      name: user.name || user.username,
+    })) satisfies NewForgeUser[];
+
+  if (extractForgeUsers.length === 0) {
+    console.error(new Error(`No extracted forge users found for ids: ${extractMemberIds}`));
+    return;
+  }
+
+  const queries = extractForgeUsers.map(
+    forgeUser => transform.db.insert(transform.entities.forgeUsers)
+      .values(forgeUser)
+      .onConflictDoUpdate({
+        target: [transform.entities.forgeUsers.externalId, transform.entities.forgeUsers.forgeType],
+        set: { name: forgeUser.name }
+      })
+  );
+
+  type Query = typeof queries[number];
+
+  await transform.db.batch(
+    queries as [Query, ...Query[]]
+  );
+}