The Ultra Knight is a mini-boss that can be found while on patrol in the Dreadnaught. This mini-boss is accessed by entering the Dantalion Exodus VI found in the Mausoleum of the Dreadnaught. Two consoles near where the Goliath Tank is found during the Shield Brothers strike must be activated simultaneously. Once activated, a door to The Bridge will open. Continue through The Bridge until you get to the Ultra Knight.