Chaka

Chaka (チャカ, Chaka), also known as "Chaka the Jackal", is one of two head guards in the Arabasta kingdom that serve under Igaram; the other is Pell. He is the acting captain of the royal guard in Igaram's absence. He ate the Inu Inu no Mi, Model: Jackal, a Zoan-type Devil Fruit that allows him to transform into a jackal or a human/jackal hybrid. He attacked Sir Crocodile outside of the Alubarna palace - first because Crocodile's utter lack of compassion angered him and to protect the country, and then in an attempt to protect Vivi and Kohza, as well as buy them time to put and end to the battle - but Crocodile easily defeated him both times. He survived, however, and showed up later on in the Arabasta arc.
 * Seiyu: Kihachiro Uemura
 * Voice Actor (4Kids): Scottie Ray