Kamen Rider Lupin, also known as Rhinocerous Beetle Lupin, is a character in the Kamen Rider series. He is a formidable thief with a penchant for high-stakes heists, utilizing his unique abilities to outwit his opponents. His character is defined by his cunning intelligence and flamboyant style, making him a charismatic yet dangerous adversary. Throughout the series, Lupin's role evolves as he becomes both an antagonist and a reluctant ally, challenging the protagonists and adding depth to the storyline with his complex motivations.