Xavier Adan

"'I hope you know this is for the Brigaders, Rita, AND ALLION.'"-Xavier before engaging in one last fight with Nyron.

Xavier Adan is the most powerful ultimate to ever live.

The Brigadiers Campaign
After defeating Magnus in his god-form, Xavier's and Nyron's bodies were scattered across the omniverse, causing them to exist in multiple timelines at once.

Unable to cope with his failure, he became a hermit wandering Allion without a purpose.

After vowing to never be involved in any struggle ever again, he instead became an observer, watching this familiar yet alien land tear itself apart one last time.