Screw the giga. This is the most OP creature in the game. Pump all levels into stamina, damage, and health. They will literally kill everything in their path. I also recommend putting them on a quetzal. Boom. You get a legit badass fighter jet with infinite ammo.
Once You get a group of these You can put them on a Quetz platform saddle, level up stamina, fill their inventory with raw meat so they never run out of stamina, then set them to turret mode. (Also don’t forget to allow AI special attacks)
Congratulations, You now have a Quetz gunship that runs on raw meat.