golem legs

Ellis’s fist, with all its weight behind it, came down straight onto Kamijou’s head. At the
very least, he knew that stopping it with his right hand would be tantamount to suicide.
He brought up his legs, using all of his mental strength, and leaped, praying.
Not to the right, not to the left, and not behind—he leaped forward.
Ellis’s body was more than four meters tall.
That meant it had a lot more weak spots to close in on than humans did, and there was a
gap of almost two meters between its feet. Still, it would, under normal circumstances,
immediately deliver a kick as he tried to get under its legs.
However, in the moment that it let loose with its punch...
Just for that one moment, its body was unstable. It wouldn’t be able to kick its feet around
without compromising its balance. Kamijou knew how this worked—he was used to city
brawls by now. An over-swing might look strong and flashy, but it was weak in that it was
simple to counter. Its center of gravity ended up right in the middle of the attack, so any
sort of evasion is impossible.
Ellis couldn’t move its feet before it finished its swing.
The fact that it was forced to try and maintain its balance like a human was its failing.
Kamijou crouched and, so low he could lick the floor, sprang forward. He went as fast as
an arrow and dove straight through Ellis’s legs!!
Right after that...
Sparks began to fly from Ellis’s body. The rifle-wielding Anti-Skill members had opened
fire.
Ellis’s movements were once again restricted.

- Toaru Majutsu no Index Volume 6, Chapter 3 Part 5