Ice Warrior (Some BBC Special Effects That Weren't So Special)
From Tardis Wiki, the free Doctor Who reference
The first Ice Warrior with whom the BBC attempted to shoot Doctor Who was an "early design" who, instead of an armored reptilian humanoid, appeared to be a huge, anthropomorphic ice lolly with a smiling face. The Ice Warrior did not appear to be a man in a costume, but was impractical to work with as it started to melt on set. (NOTVALID: Some BBC Special Effects That Weren't So Special)