Answer
**Answer: **Hans Landa, the cunning SS colonel in Quentin Tarantino's "Inglourious Basterds," earned Christoph Waltz his first Oscar for Best Supporting Actor. Waltz's portrayal of the multilingual, manipulative, and ruthless Landa was a standout performance that perfectly complemented the film's thrilling narrative and ensemble cast. His chilling presence and mastery of dialogue made Landa one of cinema's most memorable antagonists, solidifying Waltz's status as an exceptional actor.