xiǎo​lǜ​rén

little green men

小绿人 小綠人 xiǎo​lǜ​rén
little green men noun
imaginary beings from outer space, such as little green men from Mars

“We’re not going to see little green men waving at us,” she joked.

pedestrian signal
the animated green figure in a pedestrian crossing light, especially as used in Taiwan (Little Green Man)