Bunny is a major character in Toy Story 4.
Bunny is a blue and green stuffed bunny, and a carnival prize who wants to be won. Ducky's left hand is permanently not attached to Bunny's right hand.
Toy Story 4
Buzz searches for Woody on his own, seeking guidance in the button-induced phrases from his own voice box. Buzz finds himself as a prize in a carnival booth and escapes with plush toys Ducky and Bunny. Bunny finds Woody, and tackles him. and Bo, angry for this, her arm making fun of, and they recruit Ducky and Bunny to help rescue Forky, promising that they will become Bonnie's toys, along with Bo's old friend from the antique store, Duke Caboom, a Canadian stuntman toy.
At the antique store, the toys' plan to rescue Forky has succeeded. Woody and Bunny, the only toys still in love to be couples had a falling out with the other toys, and indirectly insults Bo. And Bo and Ducky return to the carnival, to clean the slime off.