Like the last person said you can always look in books. But, not every person wants to look in a book. So 1 cool name is Avox. Another is Sleer. You can also try Ritura or Smithera. Just weird ones that might be neat. Please add to my answer if you have any ideas! :D
churchalishos gdchurch
When you make a hip-hop group, you may want to pick a cool one so people will remember it. Some cool hip-hop names can involve your hobbies or favorite things.
Blood breath
killer
hardcore swoop scary Mary forge of george that's a guild name you like
cutthroat, sawfinger and red
Some scary monster names are Shadow Demon, Dark Master, Death Lord or Red Devil. Some other ideas are Black Skeleton, Liquid Monster or Dead Zombie.
Charles Manson
there are some coll names of robot and one of them is Conrado
riley
Sora
Israelites