Seriously, why name him Ducker? He doesn't seem like the kind of person to name himself Ducker. They got real creative with that name...
Seriously, why name him Ducker? He doesn't seem like the kind of person to name himself Ducker. They got real creative with that name...
IIRC, the name was never given in the LN, thus the anime staff made up that name
We must save my family!
because he ducked everyone over the second he opened that chest