Chaka

チャカ

Chaka, also known as "Chaka the Jackal", is one of the two head guards in the Arabasta kingdom who serve under Igaram; the other is Pell. Chaka serves as the acting captain of the royal guard in Igaram's absence. He consumed the Inu Inu no Mi, Model: Jackal, a Zoan-type Devil Fruit that enables him to transform into a jackal or a human/jackal hybrid.
Chaka was most often with Pell, but during Sir Crocodile's attack on the Kingdom, he left to attack him. Due to Crocodile's actions and lack of compassion, Chaka became so angered that he attacked Crocodile out of rage, but his motives were also supported by an attempt to protect Vivi and Kohza, as well as to buy them time to end the battle - but despite his efforts, he was easily defeated. He survived, however, and appeared later in the Arabasta arc commanding the royal guard to stop fighting, and later appeared at Pell's grave.
His latest appearance was during the time when the Straw Hat crew received their bounties shortly after the CP9 arc, somewhat shocked to see Robin in the Straw Hat crew.