Mr. X. Male. First person: I (majestic/noble). When introducing himself, he says, "I am the nobleman, Mr. X!" He is powerful. An enemy of Sumanai-sensei. He travels with Mr. White.

Mr. White. Male. First person: I (humble/military). Ends sentences with "sir/de arimasu." An enemy of Sumanai... maybe? He travels with Mr. X. He aims for world domination. Surprisingly, he worries when Guest is in danger. He has a somewhat boyish voice.

Sumanai-sensei. Male. First person: I (soft/polite). Catchphrase: "Sumanai!!" (Sorry!!). An enemy of Mr. X and Mr. White. A school teacher.