Any cartoons characters eh? Ok, let's approach it this way. Yang Xiao Long from RWBY because she would easily be the best Defender Titan replacement and a total blast to raid with. Gildarts Clive and Natsu Dragneel from Fairy Tail. Both could be considered Warlock replacements, with Gildarts being a Voidwalker and Natsu being Sunsinger. Natsu and Yang would probably get into a fight about master race or some such and I could sell tickets to that fight. Sasuke Uchiha from Naruto: Shippuden. He has an amazing arsenal of skills that make him a good replacement for a Bladedancer Hunter. He could also double as a Gunslinger given his ninjitsu. Lastly, Guts from Berserk. It might seem odd having two sword-focused characters but Guts is brutal. He is ruthless, aggressive, in your face, gives zero f.u.c.k.s. he embodies what makes strikers and Sunbreakers who they are and why they are meant to be feared. So yeah. Anime is a Japanese cartoon so this list works, right? If nothing else, it would make for a really funny charity stream.