Dr. Cain

Dr. Cain is a major character in the "Mega Man X Chronicles".

Pre-Rise of Sigma
Dr. Cain is a scientist and archaeologist who found Mega Man X on April 14, 21XX. X was in a capsule buried deep underground in the abandoned warehouse of Dr. Light's ruined lab. He based the Reploids on X's design, creating the first on November 22. As Cain couldn't fully understand X's design, and the Reploids didn't have a diagnostic like X, the Reploids could have problems and started to become "Mavericks". The Maverick Hunters were founded to counter the Mavericks. Sigma, Dr. Cain's most advanced creation, became the leader of the Maverick Hunters. Dr. Cain also ended up studying and repairing the then-Maverick Zero after Sigma neutralized the latter at Sigma's request.

Rise of Sigma
Dr. Cain welcomed X to the Maverick Hunters.

Lazarus Zero
After X stole Zero's parts from the Counter Hunters, Dr. Cain rebuilt Zero.

Doppler Effect
Dr. Cain is good friends with Dr. Doppler. After the Doppler incident, Dr. Cain created the Repliforce and the destructive Cain Antivirus. Unbeknownst to Dr. Cain, however, X sabotaged the antivirus in order to avoid unnecessary deaths, mostly among the Repliforce.

Rise of Repliforce
When Double nearly fatally wounded Cadis, Dr. Cain took Cadis to the X-Hunter bunker, due to the main medbay being occupied by cyborgs. There, he learns that X has been aware of the virus that was turning Reploids into Mavericks way before the other Hunters, as well as learning about the X-Hunters.

Trivia

 * Among the X-Hunters, Dr. Cain only knows the identities of Signas (Sigma), Shimmer (Sting Chameleon) and Pyrostrike (Flame Stag).
 * According to X, each X-Hunter was going to reveal his identity when he felt ready.
 * Dr. Cain believes X is in control of the Maverick Hunters.