Pidge

Katie's father and brother were lost on a mission to Kerberos, a moon of Pluto, along with Shiro. Refusing to believe the official report of their deaths by pilot error, Katie began her unrelenting search for her missing family. After being discovered hacking into Galaxy Garrison computers, she was escorted off the property and forbidden from ever returning. To further her investigation, she went undercover as a Galaxy Garrison cadet by the name of "Pidge Gunderson" and cut her hair and donned glasses to disguise herself as a boy. Infiltrating the Galaxy Patrol, she wound up assigned to a team with Lance and Hunk. Pidge eventually developed machinery to pick up interstellar radio chatter, which allowed her to learn of Galra Empire activity on the edge of the solar system. Pidge and her teammates - who had recently failed a simulation flight to Kerberos - then saw a Galran escape craft carrying Shiro crash-land in the nearby desert. The trio went to break him out of Galaxy Patrol custody, but were beaten to that goal by Keith who they then joined in his escape. Following Keith's investigations into unusual energy readings, the group eventually found the Blue Lion in a nearby cavern.