In this weekly series, Rahul Desai lists 50 of Hindi cinema’s favourite “third wheels” – that is, memorable characters whose roles are little more than fleeting cameos and little less than supporting turns – since 1990. There will be no particular order: just a colourful recollection of emblematic faces who’ve left us craving for more. I know it seems like Radhika Apte is everywhere right now – the Baazaar trailer plays before Andhadhun these days – but this in no way diminishes her gradual monopoly over the consciousness of Hindi film audiences. Apte, in fact, had been around before she arrested our (mainstream) attention with her explosive cameo in Sriram Raghavan’s Badlapur. She had acted in Bengali (her breakout in Aniruddha Roy Chowdhury’s Antaheen was one of her…