i like unique ones :)
also things considered 'simple'
if i think i can draw it it'll be more liked XD
if it looks busy i stay away usually

fat ones :p

i really like characters that arent generally used like those kaiju you did a while back

also would'nt mind a cute chubby draggy, but thats my interests

Uncommon species!

Unique adopts. Don't do what others do and recolour a template. Charge more if needs be but unique for each person is the way to go IMHO

EdIt - May as well actually answer the question

I like the way another artist does it. You see the colour scheme and select the species from a list and they make it how they like. That's how I got my awesome character.

Will always suggest kiwis but Aliens and Kaiju would be pretty rad!