A short, ugly thing that is extremely wise, teaching important lessons to confused heroes, and usually quite skilled in combat, but always seems to speak in a highly perplexing manner, often scrambling their sentences up. Much like yoda
from Star Wars, or splinter
from ninja turtles.
Indirectly the main villain's greatest foe.
Villains with Skeletor Complex often get their plans foiled and sorry asses kicked indirectly by the yoda figures.