Gladius

Gladius is a member of the Donquixote Pirates working under Pica.

Appearance
Gladius wears a full body dark-colored coat, with metal rings on the arms and chest, and metal gears on the elbows, and matching boots. Gladius also sports a ninja mask, which is connected to a pair of goggles, covering half of his/her face, and a top hat.

Personality
Gladius, like most of Doflamingo's underlings, treats his/her leader with great respect, as he/she got angry when noticed Violet's betrayal.

Donquixote Doflamingo
Gladius has great respect for his/her captain, as he is fast to seek revenge for Violet's betrayal against their Young Master. Gladius also was overprotective enough to shoot Baby 5 when she was trying to kill Doflamingo, while the other members didn't seem to care.

Baby 5
Gladius and Baby 5 have a rather strange relationship. On the one hand, Gladius didn't seem to hesitate to go as far as shooting Baby 5, in order to protect his/her captain, and on the other, the two were seen a few hours later discussing casually about Violet's betrayal.

Violet
Gladius seemed to trust Violet's abilities enough, in order to agree on her key role to defeat the Straw Hats. When the news about her betrayal arrived, Gladius seemed quite surprised, but was willing to act quick and punish her for it.

Abilities And Powers
It seems that when Gladius gets angry, his/her hair, somehow, grow to the extend of tearing his/her hat up. Whether this ability comes from a Devil Fruit, or even if Gladius can use it effectively in a fight, is still unknown.

Weapons
Gladius has been seen using a pistol to shoot Baby 5.

Punk Hazard Arc
Gladius first appeared when Vergo called Doflamingo. As Baby 5 attacked Doflamingo, Gladius eventually shot her in order to get her to calm down.

Dressrosa Arc
Gladius was talking with Baby 5 about Violet's betrayal and what they should do about it. His top hat began to expand as he became more angry about it, until Baby 5 told him to calm down and not explode.