Old man Genjuro stops Tsubasa's BFS before it hits Hibiki. He's just Badass enough to not needing a Relic to stop a Relic user. Rumor is that he is skilled in "a special kind of martial arts". Said martial arts might beAnsatsuken.
Genjuro continues to be awesome in Episode 8, where he saved Chris from Noise attacks by using his own feet to stomp the ground and create walls to protect both of them... which is followed by jumping with Chris to the top of a building.
Episode 11 is another Genjuro awesome, owning Phine in combat until she's forced to use Ryoko's voice to distract him and stab him on the chest... which he survived.
While he whoops on her, Phine demands to know how a regular guy can take on a Gear user. G-Man's response?
Genjuro: "I eat, watch movies and sleep. A True Man knows nothing else!"
He manages to damage Phine's Nehushtan armor even when his punch missed. That's right, his punch had so much force he didn't even need a direct hit to cause damage. How doesn't it hurt him? Because of the above quote, that's why!
Episode 13. All the girls use the fully-powered up version of their weapons: Heavenrend grows to the length of a skyscraper, Hibiki's gauntlets get their "charge-lines".... that extend for several hundred meters, and Ichii-bal's Mega Deth Quartet gains a battleship's worth of cruise missiles.
The reasons their weapons gain this awesome supercharge? To destroy a chunk of the FUCKING MOON!