There is a whole fitness subculture who aspire to feats of strength.
A good starting point if you are interested — BeastSkills.com
A recent post on Beast Skills is an Interview with Jack Arnow, a “living legend”, considered one of the 10 strongest chin-up men of all time. Arnow has seen many feats of stength in his 64-years.
Arnow recounts amazing performances of one-arm chin-ups alternating and in series. Iron cross (“butterfly”) chin-ups on rings. One arm front levers. And much more.
As an example of a “beast skill”, watch a video of one arm rope climbing on CrossFit.
Gymnastics Coaching.com 