Seth, Son of Satan
Seth looked around the cockpit of the aircraft, viewing the crew Iron Man had assembled. There were some really strong members, like Red Hulk, She Hulk and himself, some weak members, like Black Widow who had no powers and Nighthawk, who was only useful at night. There were also some...talkative members of the team. Specifically, that Deadpool fellow who Seth had grown into a friendship with as a fellow mercenary and agent of chaos. Deadpool turned to Seth and began running his lip off.
"So apparently my lovely X-Friends are preparing to summon the Phoenix again, you'd think they'd had enough of that thing the first time, huh?" Deadpool said to Seth.
"Whoever controls the Phoenix will have absolute power and control over the universe. I can't allow something that could challenge father exist, like the One-Above-All." Seth said to Deadpool
"Seth loves his Daddy!" Deadpool said to Seth teasingly.
"Yes, maybe if this visit to the X-Men's base goes wrong, we'll see him in Hell" Seth said.
"Oh, sorry for your loss-" just then, Deadpool was cut off by an abrupt landing in the Mutant City of Utopia. Iron Man's Pro-Registration Avengers filed out into the Island, were a group of X-Men led by Cyclops were waiting. Iron Man stepped out of the aircraft and walked up to Cyclops.
"We know about what you're planning to do with the Phoenix. We're taking Hope Summers, don't put up a resistance." Iron Man said to Cyclops.
"Yeah, well, we'll see about that." Cyclops said. "X-Men, go!" Cyclops gestured his X-Men to attack, and Cyclops activated his visor and blasted into the Avengers. Iron Man put up a reflector shield and the concussive blast bounced off, but not without knocking him back quite a bit.
"Avengers, Assemble!" Iron Man said. A gigantic battle brewed up on the beach on Utopia, the winner yet to be seen.