This marks the debut of Carl "Crusher" Creel AKA The Absorbing Man in live action media. Although in Hulk (2003) Bruce Banner's father gained a similar ability.
In the park, Creel picks up a ball and chain. That is his weapon of choice in the comics.
The character of Lance Hunter is introduced as a mercenary working with former S.H.I.E.L.D. agent Hartley. In the comics, Hunter is the leader of S.T.R.I.K.E., a British intelligence agency similar to S.H.I.E.L.D.
Simon Kassianides auditioned for the part of Lance Hunter but was eventually cast as Hydra member Sunil Bakshi instead.