Ulysses is regenerating more health then I can get out of from shooting him even with his medical eye bot dead. What gives?

He has stimpaks.

How many does he have then?

If you feel that you need to put "obviously spoilers" in the title, then shouldn't you obviously have put this in the spoiler section? I'm lucky that I didn't read it...

You should've sided with him. Fighting side by side was fun. I have yet to fight him head on. I think I'll do that in one of my reverts, but I will need to be better armed.