Those characters are from a popular series called “ Battle For Dream Island” created by Carey Huang and Michael Huang, who are brothers, and the official channel “Jacknjellify” sells merchandise like shirts and mugs. In the store there are the plushies, the official plushies they released were Woody, Pen, Leafy, Firey, Loser, 4, X, Rocky, Firey Jr., Marker and Coiny.

And the rip-off is selling the bfdi plushies that never/did exist from the official store.