The turtles traveled through the vent avoiding being seen by the men until they reached the ballroom. They got down into a corridor and when they opened the door, the men behind it opened fire at them. Michelangelo and Donatello returned the fire with their pistols while Leonardo and Raphael somersaulted to dodge the gunshots. The two brothers with bladed weapons kicked and punched the men knocking them unconscious as well as sending their pistols flying out of their hands. When the ninjas appeared, Michelangelo and Donatello switched to their melee weapons to swipe the ninjas. Leonardo and Raphael parried the enemy ninjas' katanas with their bladed weapons. Leonardo did a split kick on two ninjas while Raphael pushed the ninjas aside then did a head-spin kick.
When no more men were coming, the turtles spotted the grey-haired woman who was in her mid-30's wearing a red dress, grey gloves and boots like the one in the photo April showed them. They jumped down in front of her and she was not surprised.
"You must be the leader Kantaris," Leonardo spoke as he was not mistaken.
"You learn fast. How nice to meet you turtles. We heard a lot about you four. Welcome to Kantaris base. You're just in time for the party. I got someone for you four to play with," she spoke in a sly tone. "It's show time, baby. Play to the death!"
A humanoid jumped down wearing blue suit and having red glowing eyes.
"What the shell is that?" Raphael asked angrily preparing his sai.
"I don't think he looks human," Donatello could tell judging from the fact that the humanoid could not speak as it did not have a mouth.
The humanoid began hurling electric boomerangs at the turtles and they dodged those attacks. When they got close, it used unarmed martial arts combat. Donatello did an overhead bash on it but it hit the humanoid's arm that parried the bow. Raphael slashed it with his left sai and Leonardo cut its right arm off. Michelangelo did a combination of swipes knocking the humanoid down and it jumped back. It used the remaining to hurl electric boomerangs at the turtles and the attacks missed. With the combination of swipes and slashes, the humanoid was defeated. It screamed and sparks of electricity came out. It then collapsed into ground and the sparks were seen one last time.
"It's more like a robot," Michelangelo commented.
"Sure is," Donatello confirmed.
"Damn it!" Kantaris muttered and a door behind her opened.
"After her!" Leonardo ordered as the four brothers pursued her.