Just some guy is a Time-Travel Challenge where you can't get super powers or gold. This locks the gear and powers sections while the challenge is active. Just a regular Joe.
Reaching a minimum level of 111 will unlock the Sublevel Multi Time Energy Upgrades.
tips for getting to level 111:
upgrade exp multi a LOT
have a little luck by level 100 (in my 1st run i got super regen boss)