#yeees!!!!

Santana

von Stroheim had captured you to study your prosthetic

in the room over from santana's containment unit, he coukd hear someone screaming at them

when he escaped, something was thrown at him

catching it, he was it was a human without a arm/leg but when the missing limb was gone, there was a socket

later, he found out that they had taken the automail out without knowledge that it was connected to the nervous system

he snuck around and found it, and the two of you escaped, and found an automailist to reconnect it

Esidisi

He found you walking in the snow, carrying a sick child

he made a deal with you, he'll carry the child while you showed him the way

Kars/Wamuu

he was watching a human ring fight when they threw a amalgamation into the ring with the injured human

making quick work of it, he helped free you to [take to his masters/study you]