Claudio Garella
He made some spectacular mistakes in sequence early in his career at Lazio, so much that for some years a "Garellata" became fans and pundits slang for "keeper blunder".
He looked bulky and somehow unfit but he had great reflexes, a tendency to react to deflected balls and unexpected trajectories with whatever part of his body, and was reckless in going on low balls on the feet of the attackers out of the posts.
Giovanni Agnelli called him "the best keeper in the world... without the hands".
Anyway, he was a very good keeper in the end and got vindicated by defending the goal of Hellas Verona for their first and only Serie A scudetto ever in 1985, and of Napoli for their first ever scudetto in 1987 with Maradona.
Each one of those was a smorgasboard of fan excitement and would've been a career defining moment for any player, and he got two in just two years, bitches.
Leaving with a short blurry compilation of not particularly interesting saves by him, just for the time-period music clip.