This page describes Cervantes's Battle Style in each of the games in which he appeared.
Soul Blade
Cervantes uses a long sword and a short sword in this game. His moves are quite fast and include moves such as teleporting.
Soul Calibur
Cervantes moveset is similar to how it was in Soul Blade, but he now uses a pistol sword in place of the short sword.
Soulcalibur II
Cervantes moveset is similar to his Soulcalibur moveset with a few changes.