Le Voyageur
A French researcher from the 1950s, Le Voyageur developed technology to explore and understand the many-worlds theorem by exploring the worlds thereby created. For years he sought knowledge and adventure throughout the multiverse, before choosing to return home.
Only then did he discover that time flows differently in different distinct universes. Instead of coming home to 1959, he arrived in 2019. All of his friends and family are dead.
Despite this tragedy, Le Voyageur has chosen to use his transdimensional tech for the good of the people and his new world. Most of his abilities centre around teleport effects - transporting the team, stealing opponent's foci, or in extremis creating a dimensional shearing effect right through them (though he avoids this as much as possible - he isn't a killer).
Many of his gadgets have a bulky, retro look to them. In the slightly over a year he's been back Le Voyageur hasn't quite gotten used to the microtech, sleek designs that are currently in use.