When a gasbag has any amount of air in it has an 80% damage reduction (same as reaper king). Because of its great reduction, ability to wear saddles, have imprint bonus, eat veggie cakes, and a mate boost, it’s arguably the best tanking dino, but whenever it’s hit it looses a small amount of gas.
They can inflate and then they can do three things, do a huge jump that will deflate them, float/glide, and do a knockback attack that is similar to the diplodocus' only attack. They can also seat more than one person at a time
So bc most comments are from pve players here a pvp tip use them for soaking have them mate boosted veggie cakes yuty roar a deadon on passive healing and a good saddle no heavie or auto will stay in your way with a good gasbag and a food stat deadon