wow i forgot lol, thanks for clarification, has been a while since i played it
further research (replay of the bipedal pw fight) required to determine whether it was always first and foremost a horse (although at some point a bipedal one) or gained its horse qualities with the second set of limbs (smart emoji)
finding out the answer to what is a metal gear is far more vibes based if i dont take the bipedal nuclear weapon description. why the fuck isnt peacewalker listed as a metal gear on the wiki she should count !