Roman Abramovich was known as the "stealth oligarch" before he stepped into the limelight as Chelsea football club’s sugar daddy owner. The man loves a yacht: his largest cost $427m, and has bullet-proof windows and an escape submarine. Abramovich made his fortune from post-Soviet privatisation, aided by a man known as the “Godfather of the Kremlin”, Boris Berezovsky, and close ties to Vladimir Putin in the early years of his presidency. But with recent reports of a suspected poisoning and sanctions against him in the wake of the Russia-Ukraine war, Abramovich’s luck might be changing.

BBC business editor Simon Jack and journalist Zing Tsjeng track Abramovich’s meteoric rise from being a hard-up orphan to making billions from oil and aluminium. Then they decide if they think he’s good, bad, or just another billionaire.