Before commencing the designs for the characters in "Devil May Cry 4", character designer Tatsuya Yoshikawa consulted with several members of the staff who had worked on the series before to become familiar with previous elements. The characters were designed to emphasize their moves, which made the staff controlling their motions vital to the design. Some of the antagonist's demonic forms in "Devil May Cry 4" resemble angels. These characters were designed to be attractive to the game's audience while providing a contrast when compared to other demons in the game. Yoshikawa noted that several of the boss characters presented some difficulty when creating them. He said that Nero's design was one of the biggest challenges he had experienced in his career, because the character had to be accepted by the public and fit in the series' universe. Yoshikawa liked the interactions between Nero and Dante because of the balance the two playable characters make.