What is chopper pre timeskip?

Chopper is a fictional character in the One Piece series. Before the timeskip, Chopper was portrayed as an innocent, childlike reindeer with the ability to transform into a human. He is the doctor of the Straw Hat Pirates and his medical abilities are invaluable to the crew. Chopper is also a skilled fighter with a devil fruit ability that allows him to transform into different forms, including a giant monster with immense strength. Chopper's backstory is tragic as he was once ostracized by his herd for being different, leading him to seek refuge with a human doctor who taught him medicine. Chopper joined the Straw Hat Pirates after they saved his life and became a loyal member of the crew.