As I’ve said before, some anime like to have things so big that the square/cube law says they shouldn’t be able to support their own weight. But weight only applies when there’s gravity, right? So how about giants in space?
A lot of anime like to have things big.
The very first super robot, Tetsujin 28, is 18 meters tall, big enough that it’s English name was Gigantor. Of course, a lot of other mecha (especially the less realistic ones) are even bigger; Zearth from Bokurano is 500 meters tall. But it’s not just mecha; Dragon Ball, One Piece, Naruto, and Attack on Titan are just some of the more obvious examples of anime with giant creatures of one kind or another.