Eh, could have dropped a Damage Reduction feat instead. But ultimately I don't mind much either way. The real issue is the difficulty finding inspiring feats for a monster like this.
Yes, there are few feats appropriate for a "basic brute" with under average Dex and Int.
I thought about giving it Perfect Health, but with a +65 Fort save it already ignores poisons with DC 25 or less and there's no mention of disease immunity in the original.
So, does that mean we are going ahead with:
Feats: Cleave, Damage Reduction (×5), Diehard, Dire Charge, Endurance, Epic Endurance, Epic Fortitude, Epic Prowess, Epic Reflexes, Epic Will, Fast Healing, Flyby Attack, Great Cleave, Great Fortitude, Hover, Improved Critical (bite), Improved Critical (claw), Improved Bull Rush, Improved Initiative, Improved Multiattack, Improved Overrun, Improved Sunder, Iron Will, Lightning Reflexes, Multiattack, Power Attack, Snatch, Stand Still, Superior Initiative, Wingover
For tactics, how about:
An attacking gammaroid likes to use its Ramming attack, especially against numerous opponents smaller than itself. If it faces a substantial foe, such as a truly Colossal monster or massive spelljamming ship, it strikes with both claws and bite with a Dire charge or full attack, usually adding at least 25 [
?] points of Power Attack to its attacks.