One day, in his lab, Dr. Sumdac noticed something glowing, as he inspected it, he noticed some sort of "liquid metal" in shape of an infant, and upon touching it, it took a sample of his DNA and thus, Sari Sumdac was "born." Dr. Sumdac kept this from his daughter, wanting to tell her that she was a robot when she was old enough to handle it.
Powers & Abilities
AllSpark Key: This was once a Security ID Badge Sari used in Sumdac Systems, but it was charged by the AllSpark and shares its energy and properties. It is able to instantly repair any Transformer, ranging from damaged frames to reviving Optimus after he went off-line for a short period. Sari normally used her key recklessly, such as for amping her toys and practical jokes, but she later on used it mostly to help repair the Autobots and to detect AllSpark Fragments. She later used up all the Key's power to upgrade herself, leaving the key useless, but gave her new abilities; such as "hearing" machines to help her make them work better.
Jetpack: A Christmas gift from her father to help Sari cover more ground now that she took on a bigger role with helping the Autobots. It transforms from a scooter to a jetpack that can fit on her back.
Martial Arts: When she lost her home and lived with the Autobots in their secret base, Prowl gave her self defense lesson such as nerve striking for her safety and now has very minimal Autobot training.
After learning she was a Cybertronian, Sari gained the ability to fire small energy bursts from her hands. Sari wanted to use her new powers to help the Autobots when a giant space rock monster appeared in Detroit after a Transwarp accident, but they still saw her as unfit for battle. Upset, Sari decided to use the AllSpark Key to upgrade herself, turning her into a teenager and granting her battle-mode armor, equipped with laser skates, razor-edged tonfas, and even a hammer. This new form even allows her to breathe in space.
Sari was a vicious killer who removed the eyes from her victims. The first eye she claimed was from Isaac Sumdac, her "father" who then kept her caged up and experimented on/tortured her for years.