A Flightless Bird

A money-grubber, that's what.

There was apparently nothing worse than encountering someone who wanted to be so frugal that his options included checking someone's mecha data by looking at each part—forcefully.

Luca had a few daggers, his modified claw, a whip, and his sword, but the onlookers had never seen him bring out an actual weapon.

Was it because no one deserved that kind of honor?

The onlookers speculated about number 4's acts and wondered if it was a way to demolish the opponent's mentality.

But actually, said number 4 just forgot.

He was so focused on removing the parts properly that using other weapons would have damaged his ability to see them clearly.

If Xavier had been here to listen to his logic, he would've thought that this chipmunk was back at it again, wanting to see everything but the most obvious things. 

And this style went on up until Luca's final battle.