This boy character from Potsworth and Co. is almost unknown. But if you watch the episode Nick's Super Switch, this boy, named Moose McGrath(?), is Nick's bully who always wants lunch money and would do anything mean to get it, even by messing around with Nick's favorite toy dinosaur. He also is known for having a sensitive side; he runs away whenever Nick or his sister Rosie stand up to him.

Moose can wear his "superhero" suit with these tags:
blue superhero mask
red superhero helmet
moose antlers
dark purple cape
blue bodysuit shirt
purple letter “M” in yellow triangle on chest and helmet
purple gloves
purple bodysuit pants
purple boots

If you have any questions, you can send me a PM.
Enjoy!