Favorite Earth Defender? other than Godzilla.

Baragon.

i like him because of his design and his ability of burrowing

Rodan is my favorite monster of all time in the series so gonna go with him.

I hope we aren't using Unleashed's termonology as canon now... 

Gamera

Akagi:

Seconded.

Anyway, for my favorite Unleashed Earth Defender?  Mothra!

For my favorite kaiju who has defended the earth in a movie or two? Mothra Leo!

I like Mothra...

my favorite is baragon

Angurius (Angilas) without a doubt.

Angurius too

Anguious, Mothra, Baragon, and Rodan.

Mothra was and still is classic...

Within the Godzilla universe I would say Angurius and outside of it I would def. say Gamera. He isn't called the Guardian of the Universe for no reason.