Bartman (or "The Bartman") is Bart's alter-ego. His alias is Bart Simpson. His powers are grappling a hook, climbing walls, and gliding. He can also throw Bartarangs.
When Bart and Lisa attended a comic book convention they didn't know they could get a discount for dressing as a superhero. Bart quickly ran into a phone booth and put on a mask and cape calling himself "Bartman", although he still had to pay full-price.[1] He also told a story of Bartman when trying to convince everyone that revenge is great, but in the story Bartman had a full suit and equipment.
Bart wore the mask when he entered KBBL's gross-out contest.[2]
In The Bartman comics, Bartman fights bullies and super villains who pop up in Springfield. This series ran for 6 issues in the 90s, but Bartman still frequently appears in the Simpsons Comic Universe.
In The Simpsons Game, Bart can transform into Bartman, which gives him the ability to fire his slingshot and glide with his cape. Later on, he can also fire grappling hooks at certain targets.
In Lego Dimensions, Batman wonders if Bart may be the elusive "Bartman", before discounting this as "just not possible".
