Robin Williams Dies at 63: Shocked Celebrities and Fans Mourn the Funnyman's Sad Demise on Twitter

Robin Williams, the Oscar-winning actor and comedian, died at his northern California home at the age of 63.

The Marin County Sheriff is suspecting the actor of the movies Aladdin, Mrs Doubtfire, and Good Will Hunting committed suicide.

Soon after his death by apparent suicide broke, celebrities and fans paid tribute to the Oscar winning actor in Twitter while some wished the news to turn out as an internet death hoax.

Fans of the star are also recalling their childhood memories attached with the star's movies, including the hilarious Mrs. Doubtfire.

His friend and colleagues Steve Martin, Mara Wilson, his on-screen daughter in Mrs Doubtfire, and Sarah Michelle Gellar and Ellen DeGeneres were the first to react to the sad news.

Below are the Twitter tributes paid by celebrities.

I could not be more stunned by the loss of Robin Williams, mensch, great talent, acting partner, genuine soul.

— Steve Martin (@SteveMartinToGo) August 11, 2014

I can't believe the news about Robin Williams. He gave so much to so many people. I'm heartbroken. — Ellen DeGeneres (@TheEllenShow) August 11, 2014

Very sad, very upset, very glad I did not have to hear about this though Twitter. Probably going to be taking some time off it for a while.

— Mara Wilson (@MaraWritesStuff) August 11, 2014

pic.twitter.com/4Pyx4Kfuxe — Sarah Michelle (@RealSMG) August 12, 2014

Robin Williams made the world a little bit better. RIP.

— Steve Carell (@SteveCarell) August 11, 2014

I can't take the Robin Williams news. I've never cried over someone I've never met but I can't stop — Miley Ray Cyrus (@MileyCyrus) August 11, 2014

Mr. Williams visited me the first day of filming The Parent Trap. I will never forget his kindness. What an enormous loss. My condolences.

— Lindsay Lohan (@lindsaylohan) August 11, 2014

Condolences to the whole world. @robinwilliams RIP. #RobinWilliams — Drew Carey (@DrewFromTV) August 11, 2014

Robin was as sweet a man as he was funny. If you're sad, please tell someone.

— Jimmy Kimmel (@jimmykimmel) August 11, 2014

Robin was really sweet to me and my sister every time we saw him. He was a genius and made me laugh a lot. So sad. — Amy Schumer (@amyschumer) August 11, 2014

I am so sorry about Robin. He was sweet and generous and kind as well as a comedic genius. This is just terrible news. #RIPRobinWilliams

— Craig Ferguson (@CraigyFerg) August 11, 2014

I am named after a character from a Robin Williams TV show when my parents still lived in Africa. He meant so much, to so many, so far away.

— Mindy Kaling (@mindykaling) August 12, 2014

A tweet cannot begin to describe the hugeness of Robin Williams heart and soul and talent. This is so sad. #RobinWilliams — Ben Stiller (@RedHourBen) August 12, 2014

Fans of the Flubber star offered their tribute on Twitter.

#RIPRobinWilliams Watching Flubber will never be the same.

— Hug Make Em' (@HugMakeEm) August 12, 2014

Been reliving lots of great Robin Williams moments, including this segment from 'Live at the Met'. #RIPRobinWilliams https://www.youtube.com/watch?v=nIWB-Neyj-c&feature=youtu.be — Jason (@crimsong19) August 12, 2014

Came back from Happy Hour to find out Robin Williams passed away #RIPRobinWilliams An all-time favorite GIF... http://t.co/PlZoqnYn7C

— Julie Phayer (@juliephayer) August 12, 2014

Posted this amTry not to judge books by their cover.. Everybody has a #STRUGGLE.. #RipRobinWilliams… http://t.co/HKBYiCQd9w — Kieon (@Kieon) August 12, 2014

#RIPRobinWilliams one of my top inspirations. He was such an amazing individual and stopped at nothing to make others happy. Rest in peace❤

— Emily Sings (@EmilyAnnLucas) August 12, 2014

RIP Robin Williams. You were a wonderful actor that never failed to bring a smile to my face. One of my favorites. #RIPRobinWilliams — Mike Funyak™ (@FlaviusFunyak) August 12, 2014

Really wishing this is the best internet hoax ever... #RIPRobinWilliams - http://t.co/dfm1t60toI

— John Frost (@JohnFrost) August 12, 2014

Hope you're finding peace in Neverland, Mr. Williams. #RIPRobinWilliams pic.twitter.com/S1ZH8jDNAz — Luke Evans' Army (@LuketeersUnite) August 12, 2014

#RIPRobinWilliams Sending your family prayers & love.. Thank you for all of the childhood memories. You were amazing. ❤️

— PLEASE JUSTIN (@bieburauhls_) August 12, 2014

Remembering Robin Williams Watching RV right now. #RIPRobinWilliams pic.twitter.com/D7jJDTqsds — ☆BangBangOniTunesNow (@iArianaGButera) August 12, 2014

His alien character on Mork & Mindy actually originated on an episode of Happy Days http://t.co/a91LcBYfwL #RIPRobinWilliams

— EverythingZoomer (@Zoomer) August 12, 2014