Yes, Heimerdinger is a Yordle. Yordles also have strong fantasy-misogyny sexual dimorphism, where the females (Poppy, Lulu, Tristana) are short, vaguely chibi-fied human women with pointy ears and blue/purple skin and the males (Heimerdinger, Teemo, Kennan, Kled) are short furry animal guys.
From what I can tell, they're basically a cross between your standard halfling and a pomeranian, and also "yordle" is the most fantastic word I've ever said out loud. Regrettable about the fantasy sexual dimorphism, though! When will someone provide me a sexy fantasy race where the dimorphism is "the females are B I G, the males are tiny and colorful", I deserve some variety.
#arcane#heimerdinger#i have said the word 'yordle' to myself on like. a daily basis. it's the best word.#i formally decline to get into league of legends as a game so like.#people randomly telling me stuff is 100% of how i learn about stuff#GOD arcane is good i gotta rewatch it#asked and answered#definitelynotscott#a queue we will keep and our honor someday avenge