Francis is bulky, has absolutely no tan whatsoever, and has very crooked, discolored teeth. He wears a black sleeveless vest over a gray shirt with a lightning bolt on it, blue jeans with a wallet chain along the side, spiked wrist collars, and black nail polish.
In the future, Francis' skin is less pale and he has a faint 5 O'clock shadow. He wears a brown leather jacket with a white shirt underneath, blue jeans and sneakers.
Shown to be usually very stupid with a tendency toward unprovoked aggression, He represents a stereotypical bully. Francis terrorizes all the other kids in his school. He shows no sympathy to the suffering of his classmates, usually because he is the one causing it. In some episodes, Francis will even stand around in the middle of class bullying someone, despite that he is obviously disrupting the class, Mr. Crocker makes no attempt to stop him. Francis is shown to have a caring side sometimes, usually when he is alone. He has many posters of pop singer Britney Britney in his room. He also has many cats that he takes care of.
In the future, Francis opens up the Chain Belt Dojo, where after 4 months of karate training, he teaches karate to troubled kids (such as Charlie Amber) and uses them for his operations, similar to the 1990 Teenage Mutant Ninja Turtles movie where Shredder recruits troubled children and orphaned kids in teaching them ninjutsu to do his biddings. Despite this, it is shown that Francis doesn't recruit kids who have a normal or good childhood and kids with a good relationship with their parents. Also, he is shown to be very caring and respectful for the kids who have a abusive and neglectful childhood and gives them a new purpose by becoming criminals and giving them a home. Also, he refers to the kids that he recruited as his family because he doesn't have a biological family of his own, aside from his parents who are still alive.