Arnold Rimmer is a fictional character from the British science fiction sitcom Red Dwarf. He is portrayed as a hologram of a man who was once a low-ranking officer in the Space Corps. Rimmer is known for his pompous attitude, obsession with rules, and lack of social skills, often leading to humorous situations. Despite his flaws, Rimmer has moments of vulnerability and ambition, striving to improve himself and gain respect. His character serves as a foil to the more laid-back protagonist, Dave Lister, highlighting themes of friendship and personal growth throughout the series.