Robert Kirkman and Ryan Ottley's Invincible is one of the most violent comics ever. It ran for 144 issues from 2003, focusing on Mark Grayson as the title character. He developed powers akin to Superboy, but soon learned his dad, Nolan (aka Omni-Man), was tasked with betraying Earth and enslaving it for the Viltrum Empire.
Source：https://www.cbr.com/invincible-best-fights/
