[Tidus2K2]

OOKK. Now to bring in the big guns for Juggernaut. Read

Onslaught literally pulled the Crimson Gem out of Cain's body and put him inside it. Inside the Gem, Cain journeyed through his part, and found out that he was the avatar of Cytorrak on Earth. Cytorrak wanted to use Cain as a host, but Cain, through sheer force of will, destroyed the animated statue representing the evil god and returned to Earth, stronger than ever, but less in control, and destined to destroy everything in his path. After OZT, he actually showed up at the Mansion with a lawyer and tried to weasel the team out of Xavier's money, given that the Prof was missing. He was ignored, because everyone was trying to save Cyclops's life, and got ticked off, but when he saw the ragged condition of the team, he left, saying that they'd fall apart within a few weeks anyway. Later, Cain heard of a second gem in Korea, and went to get it, but fell into a trap laid by the Chejo-Do clan. They used the second gem to suck the power out of Juggy, leaving him a withered shadow of his former self. However, and Black Tom's request, Gambit, Storm and Shadowcat stole the gem back. Unfortunately, the second gem was imbued with the evil of Cytorrak, and Cain was possessed. He began a rampage that led him to actually break down the barriers between dimensions, and left our reality altogether. The X-Men were called in to stop him by the Oktid, the denizens of that plane, again at Black Tom's request. In reality, however, it was the Trion, the ruling "gods" of that dimension who were using their sequestered "dark side" to control Cain's body, hoping to get the X-Men to destroy him and rid themselves of their own evil. Xavier and Wolverine managed to enter Cain's mind, where they convinced him to re-take control of the power of the Juggernaut, which he did. He did not leave that dimension with the X-Men, but he somehow managed to get back to Earth to help Black Tom attack the kids of Generation X.

OK happy it's possible and i'm betting one of the dbz characters could do it.

Now for phoenix please specify which one your talking about a host or the entity that helps out a teleknetic mutant.

Thor burst through Onslaught and physically removed Xavier from the villain. However, this did not slow Onslaught down; in fact, once he was no longer tethered to his original host, Onslaught became a being of pure psionic energy. Tapping into Nate Grey's mind to learn how the Apocalypse of his time took over the world, Onslaught realized that neither men nor mutants were "worthy" to live on Earth, and so decided to obliterate them all. Using Franklin's awesome power, Onslaught created a second sun in the sky. While Storm and Thor tried to minimize the climactic damage, the Hulk had Phoenix shut down his Banner persona, and became a raging beast intent on stopping Onslaught. The two fought, and the Hulk even broke Onslaught's armor, but it didn't matter. Onslaught had evolved into pure thought. The heroes realized that matter was needed to contain Onslaught, so Thor flew into the torrent of psionic energy. When he proved insufficient, the rest of the non-mutant heroes joined him (mutant matter would only have fed Onslaught, who was a mutant himself), sacrificing their lives to defeat one of the most powerful beings ever.
So now you'll have to specify which form of him as well. It's kinda like a kick in the butt isn't it.