Which is the roo?

I know I’m coping here because I don’t want to admit it’s true…. But which of these is the roo? These are 5 week old jersey giants. Same hatch day. One is remarkably more friendly than the other. I bought one male and one female in addition to 6 girls in other breeds. My first time raising chickens. The one I now believe is likely the roo has always been the smallest and slowest to feather. I thought “she” was a runt and had slow growth from pasty butt. The male was marked with blue ink on his belly and so we always thought the friendly one was the one that was marked. We must have gotten them mixed up as they’ve grown.

Anyway, now I’m concerned I’m gonna have a jackass rooster. I know this is a risk when keeping a roo in your flock, but I was hopeful with socialization, I could have at least a semi friendly rooster. I won’t keep a mean rooster.