50/50 Heroes S01E15 - Getting Even

Animated comedy series. JC accuses Mo of triggering a huge water fight in the cafeteria, but he's the one who actually started it. As punishment, Mo is assigned to clean the most horrible classroom in the school, so he decides to ask the Sceptre for the power to take on the appearance of whoever he wishes - why? He plans on visiting the principal looking like JC to confess 'his' crime, but the power doesn't just give him JC's appearance - it gives him his personality too!