KamenRiderPegasus
わたし は ケモノ ライダ!
Well, maybe he won't do that. Or even *gasp* develop, like Accel did.
Umm...Gills, pretty much every Ryuki Rider that wasn't Ryuki or Raia, Kaixa, Orphenoch-Delta, Chalice, Leangle, every Kabuto Rider (no seriously, all of them did this at one point), IXA, Saga, Diend, Accel for like one episode but then he mellowed out.
Let's hope he turns out like Accel. Ryu was the first 2nd Rider to stop being an asshole in the shortest time.
The Kabuto Riders were the most self-centered/prickish Riders of all.They sometimes fought a Worm together, then when it's gone, they fight each other or leave without a word. Kagami aka Gatack was the only nice guy out of all of them.
So it's a basic rule for most 2nd Riders, to fight the main Rider any chance they get, without any provocation...
Someone should make a list of 2nd Rider rules and guidelines.