Ruber

Ruber, once a former Knight of the Round Table, finds his way into the ring.

The Disgraced Knight of The Round Table
A former Knight in King Arthur 's Round Table, Sir Ruber believed that they needed more power. After being rejected by Arthur, Ruber grew into a murderous rage, and killed Sir Leonel, one of Arthur's most loyal knights. Afterwards, Ruber was disgraced and exiled from Camelot. In his travels for power, he met a witch that gave him a potion said to allow him to reach his true potential, and upon drinking it, he was flung hundreds of years into the future, landing on the ring of TFR. Now he has come to join TFR seeking to become strong enough to overthrow Camelot, defeat King Arthur, and obtain Excalibur's power for himself.

Season 2
Allying with Dutch Van Der Linde after he was betrayed by Arthur Morgan, he has guided Dutch to assist him in his plan to allow Todd Howard to succeed and take over the ring for his own plans. Or not, maybe he doesn't even fucking work with Todd and just decided to fuck with Aniki for shits and giggles.

Episode 7
After Dutch's generous offer to assist Mr. Pegasus defeat Todd (For a small fee) was rejected, they joined their minds with Todd Howard to give him extra power via the Mind-Link.

Episode 11
However, they were defeated by The Butterflies and their Mind-Links were shattered.