This is my idea.
Franklin Richards in this reality has become increasingly powerful, so powerful that anything he mearly thinks about, become reality around him. (This is roughly age 12). Franklin began to understand how dangerous this was when Sue told him to put on a suit he hated and not only did his entire closet burst into flames, but Sue herself was flung away. the others were able to set sue and even the clothes right, but Franklin realized how powerful he was becoming. He refused to put his family in danger any longer. he removed himself from the reality, to a pocket universe. there he created a window through which he could watch his family, but they couldn't see him. he knew that if they thought he was still alive, they would try to bring him back, so he forced them to believe he'd destroyed himself. for six years Franklin lived like that, watching his family, occasionally intervening on their behalf (From here it took a concsious effort to affect their reality), but mostly just wishing he were ordinary.
The Exiles find him and request politely that he join, explaining all of this. Franklin, having grown up in isolation takes a moment to gawp at Blink before agreeing to help.
The rope Craig Hollis from my standard EoD (End of Days) universe where he is all alone. they reveal "accidently" to Proteus that Craig is an immortal, which he finds to be true. He leaps from the dissolving Morph's body, which as all others eventually do, has broken down due to Proteus' presence. When Proteus enters Craig's mind however, Craig doesn't go away, but is able to fight him for a few moments, using his most painful memories to keep proteus' mind occupied with in itself as Frankling manifests a metal box around them. and then, through Blink's pleading, they get Franklin to use a metal blade to sever Craig's neck. Proteus is ejected from Craig's body and Franklin allows the bleeding carcass to sink through the floor. Proteus is trapped and in moments, Craig regains consiousness.
