Rockman.EXE Beast

Both shows have beings turning into beasts. Only difference is that Claymore is darker and demonic whereas Rockman.EXE is light hearted and casual friendly to all viewers. 

After seeing one of the episodes, Dark Kirisaki and Killerman EXE reminds me of Light Yagami and Ryuk since Rockman EXE 6 was sort of influenced by Death Note. Death Note on the other hand is superb unlike the shit cashcow series handled by Capcom. 

Both shows involved fictional creatures involving the plot to kill the good guys. Berserk is shit tons better. I do see that Greiga Beast Out being similar to Guts Berserker Armor though. 

Capcom's Megaman franchise is another Popular Robot video game character much like Hudson soft's Bomberman Franchise,if your a fan of the entire Megaman franchise or any other video game robot protogonist,than give this a try,this is the forth series in the Rockman EXE/Megaman Nt Warrior Series based on Megaman Battle Network 6 Faltzer/Gregar for the GBA(Gameboy advance)