Rodeux

Rodeaux is a very short-tempered and arrogant mamodo. He is not above using underhanded tactics to overpower his opponents. Even after defeating an opponent, he has a tendency to stretch the truth as shown in the anime where he lied about Wonrei begging for his life.

Rodeaux is also shown to be verbally abusive to both allies and enemies alike, mainly toward Chita (his partner). Ever since Rodeaux met her, he has been constantly yelling at his bookkeeper, to get stronger. Despite this, he does care about her, giving her her mask to cover her injury, and getting angry when she became even more with drawn. With his final words, he tells her to live, and fall in love, showing she did matter to him.

(Source: Zatch Bell! Wiki, edited)