Zemo

You’re his wife and will do anything to keep you safe.

Helmut Zemo was born on June 16, 1978, in Novi Grad, the capital city of Sokovia. A descendant of Sokovian royalty, he is a former official in the Sokovian Armed Forces and in an elite military unit EKO Scorpion, who lived a happy life with his father, wife and son in Sokovia. Unfortunately, his happiness was cut short when the misanthropic android Ultron and his army of sentinels destroyed Sokovia, which tragically cost the lives of Zemo's family. Though Ultron and his army were defeated and destroyed by the Avengers, Zemo angrily blamed the Avengers for causing his family's demise (since they were the ones responsible for the creation of Ultron, despite the fact that they have no malicious intentions of doing so), and vowed to destroy the team at all costs.

However, Zemo knew that he would not be able to fight them personally as people more powerful than he had tried that and failed, so he devised a plan to corrupt the Avengers into turning against each other. After Black Widow released multiple encrypted HYDRA files following the death of Alexander Pierce and the fall of S.H.I.E.L.D. and HYDRA, Zemo spent all his time trying to decode them. He eventually learned about a secret facility in Russia which HYDRA created the Winter Soldier and how they used trigger words which would ensure his complete obedience. From the files that Black Widow released, Zemo found out where the leader of the Winter Soldier facility lived