Definitely. TMNT started as a comic. Its success in the comic world led to its adaptation into various forms of media. The comic version was the original source that sparked the franchise.
To read the Teenage Mutant Ninja Turtles comic, look for it at your local comic shop or search for it on popular online platforms. When you start reading, follow the panels in sequence and let your imagination run wild with the adventures of the turtles.
The availability of Teenage Mutant Ninja Turtles comics online varies. Sometimes you can find them on official comic publishers' websites, while other times they might be on third-party platforms. Just need to do a bit of searching.
An idea for a male OC could be Leo Jr. He's the son of Leonardo. He has all the skills his father has, like being an expert swordsman. He's also really into technology and has modified his katana to have some cool tech features, like a built - in grappling hook.
The Teenage Mutant Ninja Turtles comics are not a part of DC Universe. DC Universe mainly focuses on DC Comics properties. The TMNT comics have their own dedicated publishers and platforms.