He's been in the industry for 22 years now, and has been Bollywood's undisputed badshah for most of the time.
In between, he's played practically every role an actor could ever aspire for: from an obsessive stalker to a lover boy (many times) to even a superhero.
Marking the day, Shah Rukh Khan tweeted, "All notions,creations & experiences of decades will end on the day of truth. I tirelessly work to ignore the inevitable.Thx for 22 yrs of O2. (sic)"
We take a look at the various avatars he has donned till date in the industry.
Shah Rukh Khan 'the bad guy'
SRK started off on a path most conventional heroes were too scared to tread at that time -- playing a character with shades of grey -- in his debut film Deewana (1992). He made his 'entry' post interval, but such was the power of his character that he completely overshadowed even a veteran like Rishi Kapoor, the hero of the film. A year later, he was still at it, charming girls with a new genre of roles he seem to have patented with ease by then: the negative hero, who loses loses the girl at the end. Remember Darr (1993), Anjaam (1994) and Baazigar (1993)?
Shah Rukh Khan 'the king of romance'
Never mind all the awards that came his way playing the psycho stalker/lover on screen. Shah Rukh Khan soon proved he could also be the sweet, romantic man that every girl dreamt of. With Dilwale Dulhaniya Le Jayenge (1995), Pardes (1997), Dil To Pagal Hai (1997) and Rab Ne Bana Di Jodi (2008) among others, SRK became the face of the dream boyfriend/husband every girl wanted.
Shah Rukh Khan 'the common man'
He is not called King Khan for nothing. He could also play the boy next door with ease, emote their passions and struggles with such finesse that everybody could relate to him. Films like Yes Boss (1997), Raju Ban Gaya Gentleman (1992), Kabhi Haan Kabhi Naa (1994), Phir Bhi Dil Hai Hindustani (2000), Hum Tumhare Hain Sanam (2002), and several others, brought out the common midle-class man in the star on screen.
Shah Rukh Khan 'the crusader'
After spending quite a few years in the industry, Shah Rukh Khan began playing the crusader of causes in movies. With My Name is Khan (2010), SRK put forward his bit to bring out the discrimination meted out to Muslims in post-26/11 era. Chak De India (2007) re-ignited love for sports other than cricket in the country and batted for gender equality.
Shah Rukh Khan 'the ghost'
Amol Palekar's Paheli made us love ghosts. SRK played the errant ghost and freed most of us from the fears of the supernatural. Seriously, why be scared if a ghost can be as romantic?
Shah Rukh Khan 'the superman'
This avatar did not really go down well with the critics, but kids still love their SRK in those Ra.One (2011) games that were released as part of the film promotions.
Shah Rukh Khan 'the funny guy'
When Shah Rukh Khan was in an interview or interaction, he was considered the funny guy. However, his initial attempts at making a comedy film proved to be a dud -- be it Duplicate (1995), Zamaan Deewana (1998) or Baadshah (1999). However, he soon evolved and when he joined hands with comedy king Rohit Shetty for Chennai Express (2013), the box office went crazy.