Idate has shown a tendency to be cruel and sadistic with his actions, often referring to beating up others as "playing" with them. He also appears to be a heavy smoker. In his Wadanohara and the Great Blue Seaappearance, he is noticeably derogatory towards sharks, calling them "stupid" and "just fish". He even goes so far as to attack Samekichi unprovoked in hopes of eating him. In spite of his belligerence, he has been shown to be helpful, such as when he helped Tatsumiya escape at Wadanohara's request, although he claimed that he had nothing else to do.

For more information on this character, you can check out the wiki page: Orca

If you'd like context for the audition lines, you can use this website to find the lines listed. The chapter that the lines appear in will be listed with the line. 

https://ww3.mangafox.online/wadanohara-and-the-great-blue-sea/vol-1-chapter-0-450172719097087