Koogy is a musician and a fashion designer. He announces at his last concert he is going to be a manga creator, one of the four chosen for the Golden Future Cup, with the idea his fans will fill in the questionnaires for him, trying to change the competition in, as Fukuda likes to call it, "a lame popularity contest".
Lord Beida is the evil emperor of the Renhou's clan.
Fumiko was Elizabeth's girlfriend and is also a Renhou.
Arai is a mangaka who is serialized in Jump. His manga debuted in the issue of Jump before Detective Trap. It is called Cheese Okaki. He used to work as an assistant for Mikihiko Azuma. Arai is friendly, mostly getting along well with whoever he meets. (Source: Bakuman Wikia)
Age: 45 Yosshi Miyoshi is Kaya Miyoshi's father. He is a real estate agent and a karate teacher. In 1st, 2nd, 5th, 6th grade, and most of Jr. high and high school, he was in the same class as Moritaka's uncle Nobuhiro, and they were best friends. They both had a crush on Miho's mother Miyuki, and they were somewhat rivals. When Akito had met with Kaya and her parents to discuss him marrying his daughter, Yosshi started to talk about Nobuhiro's death (without mentioning his name) and eventually he found out that they knew the same person and Moritaka was Akito's partner. So he asked Akito to call Moritaka over and the three went to a restaurant where Yosshi explained his past with Nobuhiro and Miyuki, and eventually decided to support Moritaka and Akito in their dreams coming true, and gave Akito permission to marry Kaya, even offering to get him an apartment. He is a chubby man with a goatee. His hair resembles that of a baby's hat. (Source: Bakuman Wikia)