#1- I will have Ermac, from the mortal kombat series. Ermac is a character that is made up of many souls and is a complete badass.
#2- Harbinger, from the Mass Effect series. Which is a giant reaper so my destruction for destroying everything.
#3- Boba Fett and no background needed he's just a total badass.
#4- Lastly I want Darkseid, one of DC Comics strongest characters cause if you kill him with, for example fire he comes back to life immune to it so I'll have an immortal bastard on my team so I'm set with life