Sigh...this would be
so much easier if I had discovered these forums two years ago...
One thing I can say: Eowyn Skywalker, in my opinion, is a lot more like her avatar than the two descriptions I've seen here, though those descriptions are akin to what I might have gone with had I never actually seen her in person.
The Perky Ent, I think, is of average height and wiry build, and seems to have much in common with Calvin of Calvin & Hobbes, due to the avatar, of course. How biased they make me... and somehow I envision a chess board nearby.
Here's a challenge: try to envision me, a relative newb at these boards. Hint: I (hopefully, but Eowyn S. can vouch for me) do NOT look anything like my avatar.