Leviathan (Tuffty)

Leviathan (リバイアサン, Ribaiasan) also called the Demon Butler (悪魔執事, Akuma Shitsuji) is a servant directly working for the Yosumi. One of his primary responsibilities is to oversee the meeting of the Ten Warlords.

Appearance
Because he is an android, his body weighs much more than his appearance would suggest.

Trivia

 * His name is another