Mobile Suit Gundam, Densetsu Kyojin Ideon Recommendations
Same creator, same concept. Densetsu Kyojin Ideon was the series Yoshiyuki Tomino did after Mobile Suite Gundam ended. It has the same setup: Teenage boy is the only one who can pilot the giant mecha. A group of humans are forced to leave their homes and wander space, always on the run from the same bad guys, go through personal stuff, etc. Teenage boy piloting the mecha must protect the group, with assistance from a handful of companions. It's a slightly different take on the character types and relationships, and the Ideon is made up of three separate component
Both animes are from the same creator, and because of that alot of the themes in MSG are present in Ideon as well. There are a few major diferentiations, but both shows are representing the mindset of large crew when facing against insurmountable obstacles, and also these shows are very good representation of the inhumane and uselessly cruel nature of the humankind, when being in a state of war.