Scribblenauts Unlimited
23 Achievements
100,000 XP
Google Play
Maxwell in Disguise
Change your Avatar
2,000 XP
57.07%
How to unlock the Maxwell in Disguise achievement in Scribblenauts Unlimited - Definitive Guide
Emivader
TrueSteamAchievements
TrueSteamAchievements
You'll start the game as Max by default, you will unlock all his brothers along the course of the game. Most likely you will unlock Kenpo first (the one in the hospital) after completing his mini-quest. After doing so just click on Max and select "Pick Avatar", choose whichever you like and achievement unlocked.