Rick Rogers
Origins
The Avengers and the remaining X-Men (Magneto and Prof. X) were abducted by Hydra then lead to believe that Hydra was SHIELD underground. The false Agent Daisy Johnson showed Captain America his son, who attacked like he thought Captain America was an imposter. He verified Steve Rogers' identity and they joined the others. Hydra Fury was explaining a mission against the Sons of Sabretooth. After Mason Baker (Sandman's son) and his partner William Bench (Hydro Man's son) revealed they could transmute their hands into anything Rick Rogers took his cue and shot the 3 SHIELD agents dead. As he ran away with alarms going off he called "Hail Hydra," while passing another agent. The Avengers and two mutants were quickly apprehended. Rick got commendations for his part in the trap.
His next assignment was the Fantastic Four. He played Hydra traitor, trying to escape. The Four decided to help Captain America's son. They were locked up alongside the Avengers. What destroyed SHIELD, also wiped out most of the superheroes and villains. Using Rick, Mason and William the followers of Red Skull captured the remaining supers.
Rick is Captain America's clone, he doesn't lack a conscience. The world's supers were in Hydra's custody, in his Captain Hydra armor (with Hydra style shield) Rick walked through the prison. He stopped and turned to Captain America "So you're real. Thought you'd be shorter, strangely enough."
Captain America asked "If you're supposed to be my son then who's your mother?"
Rick admitted "No idea. I don't remember anything before Hydra. If you got my shield could you really shut Hydra down?"
Captain America was modest so Bruce Banner answered for him, "He can do a lot more than that."
Rick took his helmet off. "Simple head shot," he said as he disabled Steve's cell. Captain America understood, he took the shield, knocking Rick in the head as he slipped it on his arm. An agent saw the escape and soon Captain America had to use the shield. Rick had taken a dive since Steve didn't hit him hard enough. In the following battle between Captain America and Hydra agents, Rick slipped away.
He returned just as Captain America finished fighting, "Trade ya," tossing Steve's shield. Captain America returned the gesture.
Rick took a few steps towards cap before Red Skull appeared just inside the cell block. Electricity sprung to attack him from the cells beside him then the cells all opened to release the heroes. A boy stood behind Skull, Rick held his shield defensively until Marcus Matthews raised his wrist showing a red faced watch. Matt (his preferred name) angrily said "Subtlety thy name be not Rick."
Stupidly another boy walked over and opened fire on Rick from beside Matt. Rick got his shield up just in time and Matt blasted Thomas Schmidt (Tommy) back. When Rick got close to see if the gunman was an agent Matt removed Rick's returned helmet, apparently Tommy can't tell the Captain Hydra armor from a Hydra agent's gear. Lockdown alarms started, Rick pushed Matt into the cell block "Follow the plan." He and Tommy ran off while technopath Matt covered the heroes so agents would stay away, he returned Tony Stark's Iron Man armor and reconfigured a cell for Red Skull. Rick and Tommy took charge of Hydra. They disengaged the lockdown and slowly stopped Red Skull's plans.
Afterwards Tommy, Matt, and Rick moved into Avengers Tower. Hydra's bases were repurposed, like fake Fury had claimed they'd been with Hydra agents manning them in place of SHIELD agents. In essence SHIELD was replaced by Hydra, only the insignia and members changed. Life started pulling itself back together, Hydra and AIM had many pupils who transferred to the Xavier Institute.