ninja Synonyms

assassin shinobi spy warrior of the night alpha geek egghead brains ninjutsu ninjitsu brainiac bounty hunter boffin polymath rocket scientist brainbox bright spark clever clogs master of invisibility walker of shadows hidden warrior mental giant brilliant person walking encyclopedia superspy martial artist kunoichi idiot savant highbrow mastermind einstein secret agent intellectual intellect gladiator genius fighter expert duelist combatant buff bravo brain killer maestro magician sobersides whizz maven hotshot wizard