Más y Menos were tasked to push two buttons across town from each other at the same time to deactivate a bomb, and since they could not activate their power, they struggled.

These tests were televised, and if the Titans failed, the city would be devastated. He made an ultimate Titan's challenge for the Titans East, and they were all transported to a different part of the city. However, Control Freak was not ready to give up. After stopping Andre Le Blanc from robbing the bank, and saving random people throughout the city, they realized how lesser known they were. During the brawl, the twin's got zapped by Control Freak's remote, making them speak English. He claimed that his new supplies would stop these 'Titan wannabe's', but his machines proved useless against them. When Titans East got into the tower, they were separated throughout the tower by Control Freak. However, unknown to both groups, Control Freak zapped himself into the tower, seeking revenge on the Teen Titans, only to find them gone. Robin, Starfire, Beast Boy, Raven, and Cyborg were on a mission trying to stop the Brotherhood of Evil, and because of that, they could not watch over Jump City, so Cyborg asked Titans East to look after the city for them. After Blood's defeat and with the twins coming back to their senses, Más y Menos immediately developed a crush on Starfire, which endangered their brothers' bond a bit. Without the assistance of their teammates, the twins were captured and, subjected to Blood's mind control, became his new 'students.' Later, Blood decided to convert the Titans East into cyborgs, however his plans were thwarted by the Teen Titans, leaving the twins fighting against Raven and Beast Boy.

Más y Menos aided in the team's first takedown of the villain Steamroller (though fending for themselves and taunting the other members for their lack of cooperation), but when Brother Blood and his robot troopers attacked the tower soon afterwards, the Titans East panicked and split up, each fending for himself, herself, or (in the twins' case) themselves. Cyborg, who had originally come from Jump City to help outfit their tower, decided to give them a hand in getting more organized as a team. Initially, the twins were - by necessity - the only Titans East members who worked as a team, but even then they still got into the way of the others or were hindered themselves. They are first seen in ' Titans East - Part 1', where they were helping Speedy, Aqualad, and Bumblebee build the Titans East tower.

Both are about 11 or 12 years old and come from Guatemala, and even though they had not learned to speak English at the time they came to the United States, they are perfectly able to understand it. How the twins came to the attention and enlistment into the group which would become the Titans East remains unknown.

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