Today, I'm letting my one-track mind keep me on the topic of daikaiju. Here's Gorgo's mother, aka Ogra, from the 1961 British monster flick Gorgo (which was featured on MST3K for one big day before the rights expired to it...and which got some tie-in comics from Charlton that apparently are in the public domain to stay). I'm building on the daikaiju as player character idea, so the stats here are from an imaginary giant monster RPG that plays a lot like the Basic Fantasy Role-Playing Game.
Amphibious Reptile, Level 10 Brawler (360,000 XP)
9d12-7 (52) HP
STR 7(-1) INT 11 WIS 10 DEX 10 CON 7(-1) CHA 11
Size Code 10 (Godzilla-sized, +/-25 modifier vs. human-sized creatures)
2 punches (+6, d6-1 damage) + tail slap (+6, d8-1 damage) + bite (+6, d8-1 damage)
Ram (+8, d12-1 damage)
Gorgo's mother (Ogra) is known for wreaking havoc on London in saving her son from his human captors. As an amphibious reptile, Ogra can breathe underwater and gets +4 to saving throws vs. atomic energy or paralysis. A Brawler, Ogra lacks any atomic or magical attacks but is able to apply her DEX modifier to all attack rolls.
An ancient monster, Ogra has been somewhat weakened by her years of slumber. It is unknown how much strength she may gain after acclimation to survival in the modern world.