When we first meet The Big Bang Theory's Leonard Hofstadter he is a self-proclaimed nerdy scientist who instantly falls in love with his new neighbour Penny.
Though it seems unlikely that budding actor Penny would be interested in dating Leonard. Eventually Penny realises that he's actually the perfect man for her.
Over the course of the 12 seasons of the show, Leonard learns that actually he's a cool guy and just needs some self confidence.
Are you an expert in all things to do with The Big Bang Theory’s Leonard Hofstadter? This quiz features 12 statements all about everyone's favourite experimental physicist. All you need to do is work out if each one is true or false.
Can you remember the name of the spy who Leonard dated? Do you know if Leonard replaced Sheldon's pizza or another of his favourite take outs, after his favourite place closed?
Even if you have seen all 279 episodes of The Big Bang Theory, you might struggle to identify which of these statements are wither true or false. Will you turn out to know all there is to know about Leonard Hofstadter? Let's find out!
Don't forget, all the answers can be found at the end of the quiz. Good luck!