[Saber Cherry]

Big encumbrance-free units are good tramplers. High protection and high HP are important, and ethereality and regeneration can be great... Quickness is a good idea, too.

Anyway, trample is good for squishing little squishies. If you've never used trample, try starting a game with the White Bull pretender and see what you've been missing! Research up to Personal Regeneration before you send him out, or give him a ring of regeneration. A Missile Amulet or Lucky Pendant might be useful as well, depending on your national mages.