I Thought I Was Watching A Scene From Mrs. Doubtfire. When I Realized The Truth? Speechless!

There was nobody quite like Robin Williams. But in a viral tribute video, titled Never Had A Friend Like Him, actor Jamie Costa comes pretty close.

The actor pays homage to Williams with a whopping 20 impressions from his film and television roles. In the video, Costa channels some of Williams' most memorable characters, including Mork from Mork & Mindy, the Genie from Aladdin, Mrs. Doubtfire herself, Good Morning, Vietnam's Adrian Cronauer, Teddy Roosevelt from Night at the Museum, and so many more.

Since Williams' untimely death, there have been some amazing tributes, ranging from beautiful lifelike art to Jimmy Fallon's touching goodbye.

"My tribute to the man who's [sic] spark ignited my passion. RIP Robin Williams," Costa captioned the video.

He totally nails all the characters with his spot-on impersonations — and it's not just because he looks like Williams. In fact, the well-known Vine user is known for doing incredible impersonations of other famous celebrities as well, including Jack Nicholson, Russell Crowe, and Matthew McConaughey — just to name a few.

Williams was a source of inspiration and laughs for so many people around the world, including Costa. One thing is for sure, he will never be forgotten.

Watch the must-see tribute below. If you enjoy Costa's impersonations, please SHARE it with all your friends on Facebook.