Teen Titans Go! #21

Professor Chang blasts Beast Boy with his new G.A.R.T.H. Gun and transforms him into...Garthzilla! When the giant green monster starts trashing the city, the Titans have no choice but to bust out their secret weapon...the Titans Go-Bot 5!

Characters: Beast Boy, Brain, Brother Blood, Bumblebee, Control Freak, Cyborg, Deathstroke, Dick Grayson, Garth, Kwiz Kid, Lois Lane, Mas, Menos, Phobia, Professor Chang, Raven, Roy Harper, Silkie, Starfire