Bananaman:Man Of Peel

Characters
Eric Wimp-an ordinary schoolboy living at 29 Acacia Road, Nuttytown (later changed to Dandytown and then Beanotown when the strip moved to other comics), eats a banana to transform into Bananaman, an adult superhero, sporting a distinctive cowled blue and yellow outfit complete with a yellow two tailed cape resembling a banana skin.

Bananagirl-

Plot
Eric was rocketed to Earth from the moon as a baby, and gained his powers because the crescent moon resembles a banana. in a maternity hospital, he obtained his powers after unintentionally eating a banana in which General Blight had hidden a stolen supply of Saturnium (presumably similar to uranium, neptunium or plutonium), and accidentally left it next to Eric.