World Walkers

"Ottanger is a rebel and mutant on an Earth governed by a ruthless Committee. But, after the Inspectorate experiments on him, he realizes his mutation allows him to reach alternate worlds. The multiverse is revealed in all its glory and terror - and he understands that he could finally flee his timeline.
Then Ottanger meets the Fenris, an evolved form of human who is visiting his Earth from the far future. It seems the Fenris engineered the original world-walking mutation so that those altered could escape the Committee's nightmarish regime. Yet this only worked for a few; millions continued to suffer. And Ottanger sees that the Committee will become unstoppable if not destroyed.
However, the Fenris has attracted another threat to Ottanger's Earth. The hive is a variant population of a trillion linked minds. It craves world-walking biotech and will do anything to get it. As conflict looms at home and war threatens the multiverse, the Fenris, Ottanger and his companions must prepare for a galaxy-altering battle."