Hunk went from
- heavily disliking flying and having motion sickness
- hiding in fear behind other people
- being hesitant about getting involved in battle
to
- rallying the team to save Shay and the Balmerans
- facing a near death experience with the Yellow Lion almost getting shot point blank
- pulling off amazing offensive maneuvers with his lion (requiring a lot of rough movement while the slightest jarring quickly made him sick before!)
- having enough knowledge of alien cuisine to be able to replicate Earth food
- (basing from S4 screencaps with him and Allura) becoming a good interplanetary diplomat
- outright elbow dropping a galra soldier
and I just wanted to say I love Hunk.