Some combinations I found funny...
Over half of them combined with child...
The mega child
The mad child
The grand child
The invisible child
The mega wizard
The rancid wizard
The black wizard
The doctor clown
The professor clown
The captain clown
The black combined with half of them...
The black mutant
The black freak
The black robot
The black devil
(oh why he gotta be black?!)
The bloody corpse
The rancid corpse
The professor corpse
Captain corpse
The atomic ninja
The mega ninja
Doctor ninja
The rancid ninja
The evil devil
The evil skull
The evil criminal
The professor robot
The ghostly robot
The dangerous freak
The dangerous master
I like a couple of the freak's...
Phantom freak
Doctor freak
The atomic freak
The grand freak
...though it may be due to the fact that I keep thinking of dancing when I read freak...
Phantom devil sounds interesting, but probably because it sounds like a title of a game I would play.
The atomic child, sounds like it can go either way (most of the "...child's" do, I guess do).
The iron slayer, sounds more like a hero title (probably most do...
The evil slayer
Phantom slayer
The dangerous slayer
The unstoppable slayer
..ya seems so)
tl:dr - Since these seems more like titles than names, I wouldn't use them as my name. But if you want a title, I'd probably favor "The Grand Lord".