Jamie Costa's impressions of Robin Williams and his iconic characters are truly unbelievable — and not only because he looks so much like the late actor. The well-known Vine user is known for doing incredible celebrity impersonations, and on Monday, he shared a compilation of 20 spot-on impressions of Robin Williams characters to honor the late actor. He wrote, "My tribute to the man whose spark ignited my passion. RIP Robin Williams." Watch the must-see tribute above, then check out beautiful, insightful Robin Williams quotes to remember.