green cartoon alien holding thump up

accept area 51 acceptance affirmative agree agreement alien alright approval approve arm arms art background cartoon character cheerful clipart concept congratulations cool cosmic creative creature cute deal decisions expression extraterrestrial eyes fantasy fiction finger fist friendly fun funny gesture green grin hand happy holding humor humorous illustration information isolated lovable luck martian outer perfect positive raised rendered rendering roswell sci sign smile smiling success symbol terrestrial thump toon ufo white winner