A cybernetic clone of Vita, improved with the advanced technology of the Future Rebel Army. Although Vita herself is still alive in Nova's time, she's lost all mobility and has been confined within a life-support system. It's unknown as to whether Nova is autonomous or remotely controlled by Vita, but Vita does stick close to her "sister" in battle and will appear from underground (next to a single clone) should her twin's side achieve victory.
Compared with the original, Nova's power and durability are greatly improved, even though her basic movement patterns are relatively unchanged (while still being visually distinct). Just like the original, she shuffles across the battlefield slowly, suddenly leaping forwards when an enemy comes into range in order to deliver devastating combos. She no longer appears to be able to fly, however, and her two explosive eye-lasers don't have quite the same range.
Should Nova be destroyed, she'll reveal Vita's old ever-unhealing injuries before finally self-destructing.
Her voice is of a slightly higher pitch than that of the original.
First appearing in the Extra Ops "Next One", she is sent from the future to destroy the newly built Slug Gigant MK II, which she does successfully.
She later appears in the Extra Ops "Time Collision", where she launches an attack against a Regular Army base with the help of a new Kraken. The attack is almost successful, but is repelled due to Mello's convenient arrival. The two share a few words before Nova makes her escape, as she states that she cannot be captured yet.
Nova first appears in the story "Cleopatra's Pleasure Tour", where she is summoned into the present world while on a mission for the Future Rebel Army. Unsure of what happened, she investigates the nearby area, confused to where the enemies are. El Dorado appears and asks for peace, but because she is intent on finding the enemy, is forced to battle him.
She easily overpowers El Dorado and prepares to finish him off, but Vita arrives and orders her to stop. Nova recognizes Vita and stops, before being told to follow her, which she does. Outside the town, Nova introduces herself to Vita and begin to tell their backstories. Nova admits that she dislikes the human Vita, but was surprised when she saw her as a cyborg. She also admits that she is jealous that Vita has friends and family to protect. Sharing some unknown bond, she offers Vita the Union as a gift.
When Cleopatra arrives to investigate a power surge, she defeats Vita and approaches Nova and the Union. After a short clash, Nova prepares to go all-out when the Big Gate forces her back to the future alongside the Union.
Nova eventually returns to the present timeline in time for Christmas. However, because of her origins, she had no one to share Christmas with. Midori would eventually arrive and inspire the cyborg, who eventually realized she was Vita's only hope. She gave Midori the Christmas fragment.
Later on in the summer, Nova was sent to a resort island to act as a cheerleader, which she found embarrassing and wondered if it was actually a mission. When everyone on the island becomes aggressive, she attempts to defend the Rebel Army personnel from Rita, managing to snap her out of her trance by causing a mental breakdown. Odette, who had also arrived for the summer, informs the two of the situation and Nova goes with her while Rita stays behind to help the other Regular Army personnel. When Nova finds a Mars Brain Robot, she realizes that the Professor is behind the scheme and confronts him with Odette. After damaging the Rugname X, the Professor tells her that the boreal matter will wear off soon. She tries to chase him, but Odette drags her away as the Rugname X would have crushed her otherwise, much to her disappointment.