I often get combative coming out of a seizure, and afterward I can barely remember any aggressive episode that may have happened, only bits and pieces. I've got a couple of really good stories about that, but I digress... RandySherman is correct, it depends on what part of the brain is getting affected by the seizure. My RTL involvement has caused a lot of grief over how I've become so hyper-emotional in general, quickly tearful, not just after a seizure, but all the time now, and randomly. Damn those ASPCA commercials... Bursting out with tears and sometimes even sobbing over practically nothing feels more like a mental illness to me than a feature of epilepsy, and it's humiliating to me, even if no one sees it. I have never been like that. The meds I'm on also act as mood stabilizers that help a lot, and I see the neuro department's staff psychologist monthly. After the mood stabilizer meds, it's all up to me to comprehend, recognize, and manage. Emotional dysregulation is just another miserable trapping of epilepsy, and I don't like it, but I'm getting help for it. Just understanding why it's happening was a huge step for me.

The common reason of your mood change after the seizure , deals with where your seizures waves hit on the brain. In your case your seizures are hitting the part of you brain that works with your emotions
( anger part ) .
Some people experience crying after their seizure. It all depends on what part of your brain the seizure hits, whether it’s the physical or mental part.