Coilette

Coilette is the name Bender Bending Rodríguez temporarily took in 3004, when he changed sex to be able to play in the fembot league of the 3004 Olympic Games.

Bend Her (3004)
In 3004, Bender Bending Rodríguez dreams of entering the Olympic Games, but much to his sorrow, the other manbots are much better at bending than he is. He discovers that there is a fembot league, and decides to dress up like a woman and enter. He wins by a long shot, but learns that before he can receive his awards, he has to try for a test of his gender oil. With help from Professor Hubert J. Farnsworth, he physically change sex, and he can receive his awards.

Much to Amy's and Leela's dismay, Bender stayed as a fembot after the actual Olympiad as well, enjoying the perks of the gender, and almost married Calculon before finally switching back.

Neutopia (3011)
In the upcoming episode "Neutopia", the Planet Express crew encounters a being which changed the genders of the crew, and Bender will once again change into Coilette.