Arnold

Arnold (アーノルド) was a Twilight hired by Ivan Glaziev to capture Dr. Theo.

Appearance
Arnold is a big burly man of average height with dark skin and slicked back hair. He has a deep voice along with an impressive build. Like all Twilights he dons dog-tags that show off his B/2 rank.

Personality
Arnold appears to have a violent temperament with a short fuse, and gets easily flustered when isn't taken seriously. This was seen when Dr. Theo tried to stab Nicolas after his clinic was damaged with both ignoring the fact that Arnold was right there.

He is also shown to be cocky of his abilities seen when he made fun of Nicolas and underestimated his abilities just upon looking at him.

Background
Not much is known about him but he appears to be a Tagged mercenary for hire.

Plot
Arnold was hired by Ivan Glaziev to capture Dr. Theo. He sought to capture Nina and use her to force Theo to do his bidding, but his plans were put to a halt when Nicolas interfered with him ultimately defeating the Tagged.

Trivia

 * His real name was never revealed in the manga, as opposed to the anime where his name is briefly shown on his dog tag.