could green dude be modeled after a Japanese kappa. Maybe he is an armless kappa. They both have a beak and the white line on the head might be a plate. :
the only guy who can carry eg Kappa : r/AdmiralBulldog
What is a Kappa? - YouTube
Authentic Anvest Sweatpants - Sage – Kappa USA
The Kappa Story (What Happened at Minecon?) - YouTube
Kappa | Know Your Meme
DUCK DUDE】【Kappa】ニット帽 ニットキャップ 2点セット - メルカリ
White Kappa Alpha Psi Member Does His Shimmy To Fetty Wap 'Trap Queen' - YouTube
Josh DeSeno on becoming Twitch's biggest icon as Kappa | Metro News
Josh DeSeno on becoming Twitch's biggest icon as Kappa | Metro News
What is Kappa? Everything to know about Twitch's most famous meme.
Twitch al Twitter: "A Kappa is born. Twitch founder @justinkan stopped by for a talk about Twitch history and more! Full talk: https://t.co/icD4ZGVjOq https://t.co/Fug1aP6nIt" / Twitter
Pogchamp and Kappa guys with their twitch emote - 9GAG
Kappa | Know Your Meme
Miyo Rokujushi, Eight Trigrams and 64 Hexagram : r/Jujutsushi
Kappa! "Dudes! We're in 'Shogun'"! -TMNT 3 | Tmnt, Book cover, Dude
Twitch emotes list: the meaning of Twitch characters, explained - Polygon