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Gatlin is a tall, well-built man with short dark hair and a scar on his forehead running down-left. He also has beard stubbles.
He seems to be a careful and cunning individual, as he decided to cripple Border through non-violent methods as much as possible, realizing Aftokrator's plan was to make Border resent and go after Galopoula and Rodochroun instead. Not even being defeated caused him to lose his composure; rather, during and after the battle he praised his opponents.
- As with the other Galopoula Expedition Force members, Gatlin's name originates from a character from Kiteretsu Daihyakka, with some possible modifications. In his case, his name is simply an anagram of the character Kōji Tongari's surname (尖) written in Katakana (トンガリ).
- "Gatlin" or "Gattlin" is also an English surname meaning "Fellow" or "Companion".
- According to Volume 16, he likes;
- Spit-roasted fish
- Venison stew