Rohan Kishibe

Rohan Kishibe (岸辺 露伴) is a character introduced in Part IV: Diamond is Unbreakable.

Being a successful mangaka by profession, elements of his personality and experiences seem likely as self-inserts by Hirohiko Araki. The name Rohan Kishibe is also an approximate anagram of "Hirohiko Araki", sharing enough letters to spell "ARKI HIHO", unless completing the anagram by duplicating the missing letters with O, R, A, I and K.