James Fleamont Potter is an energetic walking ray of sunshine. He loves life. He is tall and has Spanish roots.
Sirius Orion Black is as big of a troublemaker as his best friend James. They always do pranks together. Sirius is way shorter, French and has long black hair.
Remus John Lupin is by far the smartest the group. He is prefect and likes to read. He is tall and has short brown hair. 
Peter Pettergrew is the more "unknown" marauder. He hangs out with the guys but is just.. a little differe