Characters don't come much bigger than Godzilla and few actors have had the honor of stepping into his giant scaly shoes in an official sense. Amongst the most famous is, Haruo Nakajima, the man who portrayed the Big G in his very first film outing in 1954. Widely considered the finest actor to don the Godzilla suit and waddle around hip-tossing giant monsters into cardboard city-scapes, Nakajima frequently spoke of how proud he was to be so synonymous with literally one of the biggest icons of Japanese cinema.
This isn't to say Nakajima particularly enjoyed playing Godzilla, since the suit very nearly killed him almost every time he put it on—a sentiment echoed by other actors who have portrayed the radioactive lizard on screen. According to Nakajima, the first Godzilla suit weighed over 100 kilos and was so heavy he could only take a few steps in it before becoming exhausted.
Dehydration was an ever present threat while wearing the costume with Nakajima having to wring the sweat out of his t-shirt every chance he got, which also inevitably caused the suit to smell really bad. Something that was only compounded by the fact Nakajima occasionally had to wallow around in giant pools full of pee in full costume. While you never really expect portraying a giant lumbering atomic monster to be all that glamorous, you also don't quite expect it to involve standing in a stew of your own sweat and someone else's pee either.