He appears in the sequel , Teenage Mutant Ninja Turtles : Out of the Shadows .
At the end , when the Turtles are leaving in their van after Mikey blows up Vern Fenwick 's car , Mikey tries to impress April by singing The Turtles ' Happy Together .
Mikey appears in the sequel , Teenage Mutant Ninja Turtles : Out of the Shadows .
At the end , when the Turtles are leaving in their van after Mikey blows up Vern Fenwick 's car , Mikey tries to impress April by singing The Turtles ' Happy Together .