gloomy cedar
It might be a really big stretch but let me cook.
A shield in Yeeps is guaranteed to block atleast one hit, which would let the Yeep survive 1 hit without a scratch. (Of course it's a pillow, but we are going off of the game logic.)
A snowball can freeze a player in place for around 3 seconds, which could technically freeze Goku for around 3 seconds.
Bats deal knockback, and if someone is frozen, like Goku, could send them flying.
So if you play perfectly you could first block all Goku's attacks until the perfect opportunity comes for you to freeze him. Then you could use your bats to knock Goku up then freeze him again, use a firework to get back up close to Goku and could repeat that process while hoping he does know that he could fly to get out of it. Repeat that over and over until the Yeep and Goku are in space.
Goku cannot breathe in space so he will die.
The end... right?
This could have, and probably would have not worked if you tried to replicate it, because Goku is smart enough to get out of the situation and I don't think Yeeps can react that fast.
But it is fun to think about
But it would still be funny to
inland knot
dapper umbra
modern narwhal
bright junco
sly harness