[Kirathis]

Not too experienced with the DCUC stuff. Some Legends can just have the heads popped off but considering I ripped the peg out of the body when I did not heat my DCUC Blue Lantern Kyle first, I am definitely going to say heat it up first.

You should be able to just plop the figure down in the water for a bit. It does not need to be boiling but you want it to be quite hot. I would just fill a mug with some water and microwave it for a couple minutes to get it hot and plop him in head first for a few. Then just pull him out and see if it comes off easily. If not, drop him back in for a bit.