DISCLAIMER: I own nothing of Marvel's concepts.
A/N: Vance Creed, the CORE's Ravager and host of the monster Creed, joins the Guardians of the Galaxy.
Guardian
When he was given the chance Vance joined the Guardians of the Galaxy. He spent most of his first year with them sleeping in the cockpit. They found out when he fell asleep working on a program to simplify bounty hunting, it tracked bounties' last seen lines to conserve fuel on collection. Once he showed them the program, he told them he needed to do a Druid ritual to lock up Creed and Peter Quill let Vance use his quarters. They had many adventures during the week Vance was holed up in Star Lord's quarters. After he finished the meditation ritual the door's lock reset and he used magic to collect on the remaining bounties his program tracked, giving Peter the payment. He and Rocket became roommates.
Vance spent two more years with them after a stop on Earth for the MPA conference. They arrived on the third day of the conference and saw former fugitive Frank Castle give his speech about the Punishers continuing their war on crime. Vance used his diplomatic immunity to steal a six pack from the UN building break room after getting JBL's Bullseye past security. The conference was crashed by invaders after Vance gave an unscheduled presentation on how humanity has persecuted mutants and how more genes are needed to give a person a disease than make them a mutant. Vance used the invasion as an opportunity to shoot Skrulls impersonating world leaders while Bullseye smashed a beer bottle and threw the shards at invaders. Vance would've let the aliens take Earth but wouldn't hunt Skrulls for them. He got Bullseye and Erik out but Vincent refused to go with him, thinking he'd spur Vance to stop the invasion. The Guardians got Vance to help free America's heroes, he revealed Erik as a robot in the process. Vance killed all of the invaders, killing the leader during a televised announcement to the world. Vance took over "Hello humanity, must be in Hell now. Thanks to you I grew up there. Enjoy alien retribution."
He fully intended to let humanity suffer the consequences of his actions. The Guardians compromised, he'd keep the ship on the blue part of the moon for two days while they tried to save the planet.
In the end Alexei Cortez (Magneto Junior) took most of the world's metal in a sacrificial move. He smashed the metal and the invasion fleet together above New York state. MJ did this as Alexander Ashton (a powerful telepath) knocked every soldier and prisoner out using his replica cerebro while Duncan (red skinned teleporter) transported all invaders to an abandoned island. Alex and Duncan were helping to fulfill MJ's last request. Groot caught Alexei, breaking his fall after the blast broke every bone in his body.
Before the Guardians returned to space, Vincent through a party at his American embassy. Unlike most of New York the embassy, which he inherited along with his grandfather's kingdom, was mostly nonmetallic. Crown Prince Vance Creed accompanied Alexei's wife Queen Eliza in a elegant dance. The real Erik had protected other captives in one metal sphere, shielding them from the explosion and atomic bombs' radiation.
Vance taught Vincent a Druid spell for mind reading during the party. Vincent kicked everyone out and saved Vance from a flashback that Creed could've used to take over. Following that, Vance almost annihilated the assassin Bullseye and beat fear into Sabretooth. He did this to help settle two longstanding wagers by proving he could beat both, he offered them a million dollars if they could keep him down for 2 minutes to instigate the fight after arming Bullseye with Gamora and Drax the Destroyer's weapons. Queen Eliza helped the V twins stop Jericho's attack.