i can kinda see the little one as something like Gavin
buuut i have such trouble coming up with character names (good luck, hope you get some good suggestions)

Bentley sounds good to me for the blue guy, don´t know why. Gus sounds like a good name for the buff tiger. The colors really stand out on this, really beautiful and shiny tones.

The names that immediately came into my head were Joakim (Swedish, with the J projounced like a Y) and Corduroy, respectively

Theo 'n Joel are my generic suggestions of the day.
(big guy Theo and blue guy Joel)

Awesome characters!