GB is kind of an idiot, but not that much of one. Speed is high because he can lift himself with telekinesis and use teleportation. Survival is average because he has protective metal parts, but some of his internal organs can be jammed. Specifically his liver, kidney, appendix, a part of his small intestine and the muscles of his chest, hips, right arm, left leg and eye. In short, keep things simple or visual, let him levitate you or throw you into a portal, and try not to jam his organs.