Serena and Bellicus probably exist in alternate versions of Alien X.

Serena and Bellicus are sort of part of Alien X's DNA.

Serena thinks Pluto should have been a planet instead of a dwarf planet.

Serena's name seems to be derived or based off 'serene', meaning calm and tranquil, which describes much of Serena's personality.

So Long, and Thanks for All the Smoothies (first re-appearance).

The Ultimate Enemy: Part 2 (flashback cameo).

The Forge of Creation (first re-appearance).

Serena, like all Celestialsapien personalities, can be terrified by Toepick's face. Serena, along with Bellicus (and by extension Ben), has the ability to warp reality.ĭue to Alien X not being able to do anything without a consensus from two of the three parts (in Omniverse, all three) of its personality, Serena is relatively powerless on her own. Professor Paradox is not allowed to be closer than 500 light-years to her and Bellicus, or any Celestialsapien for that matter. Serena first appeared in the episode X = Ben + 2 when Ben transformed into Alien X, and Ben quickly discovered he was locked inside the form because of the eternal debates between the two entities who control its body, Serena and Bellicus. Despite this, it takes slightly less persuasion to convince Serena of ideas than with Bellicus. Consequently, she is often seen arguing with Bellicus about what is best to do. Serena is generally naïve, sensitive, and emotional.

Unlike her counterpart Bellicus, she is sometimes (though not fully) intrigued by Ben Tennyson's will and ideas for Alien X this suspends unanimous agreement between the three parties. She represents the voice of love and compassion and thus is often calm and peaceful with the known exception in the presence of Professor Paradox. Serena is a moral manifestation within Alien X together with counterparts Bellicus and Ben Tennyson. In Omniverse, she has eyelashes, eyebrows and a more humanoid nose and a smoother face. In Alien Force and Ultimate Alien, Serena looked like a female green human face with very realistic features.

Ben 10 omniverse female characters