Lee-Boost is a faithful take on Boost Lee, the fictional advertising spokesman created for Boost, a UK pay-as-you-go energy supplier owned by OVO Energy. The character was developed by the agency SNAP LDN and debuted in Boost's integrated campaign starting in February 2018, when the brand launched its app-based prepay service. He is not a real person and exists only as a character in the campaign, with no life beyond the ads and app.

Boost Lee is a parody homage to martial arts legend Bruce Lee. He wears a yellow jumpsuit, a nod to Bruce Lee's look in Game of Death