He's a jumper.
I was in the middle of cleaning the tank, and I left the room (keep in mind, the divider was up and was about 4-5 inches above water level but it was slanted because i removed the decor.).
Well, I come back and guess who is on the other side?
Thank goodness Buddha was in his own tank. But the two of them were flaring at each other and I can tell Buddha was getting hostile (he was literraly smacking his tank walls while Pudge just swam around, flaring).
I moved them away and removed the divider after putting water back in.
The good thing is that the dividers touch the top of the tank and don't leave much space between the tank and hood for Pudge to jump out when there is another betta on the other side.
I do have a feeling though that Buddha is definitely the more aggressive one...