Beatdown! Boosts the ATK of face-up attack position monsters you control by 300 per level 5 or more monsters you control. You can only use the skill once per turn.
Draw Sense: Earth Can be used each time your Life Points decrase by 1500. In the Draw Phase, instead of doing a normal draw, draw a random EARTH attribute monster.
Teacherly Discipline Can be used each time your Life Points decrease by 1500. Declare a Monster, Spell, or Trap Card. That type of card will be randomly selected from your opponent's Deck and placed on top of their Deck. Neither player will see what the card is. Nothing will be placed on top of your opponent's Deck if the declared card type is not in their Deck.
Vellian Crowler is the head professor and department chair of techniques at duel academy. Initially started out as the antagonist of the show, Crowler wanted to expel Jaden from the academy, attempting several times. After losing the duel against Jaden, Crowler eventually had a change of heart, becoming more of a respectable teacher, as well as serving as a comedic relief.
Using the Ancient Gear archetype, which are mostly Machine-Type monsters, Crowler's playstyle revolves around trying to summon gear golem as soon as possible. This allows him to attack without without getting stopped by spell/trap cards, and difficult to go against since it also inflicts pierce damage.