Many fans will recognize Fire Force as a spiritual successor to the hit anime show Soul Eater. Keeping in this in mind, we can infer that the dreads-sporting Ogun is the spiritual successor to Kilik.
Ogun is a fire force cadet alongside Arthur and Shinra. Just like the latter duo, he is very powerful. Though not as eccentric as his aformentioned best friends, Ogun can hold his own among the heavy hitters of the Fire Force universe.