Who is Jessica Yi?
We see Jessica Yi during an early conversation between Monica and Dr. Tarleton (who we will later learn is MODOK). Monica is telling Tarleton about some of the “Inhumans” that they’ve discovered in the wake of the A-Day explosion. In this context, “Inhumans” is the term they use for people who were affected by the A-Day event and acquired powers as a result of the fallout.
Jessica is first described as “Subject 1102,” which simply seems to be Monica and Tarleton’s method of classifying discovered Inhumans. However, the screen soon displays Subject 1102’s real name as Monica and Tarleton break down Jessica’s ability to create an almost perfect clone of herself. According to Monica, the clone’s only distinguishing feature is her different eye color. Tarleton theorizes that this is because her cells are “splitting down the middle” and essentially creating two human beings. He compares the effect to the abilities of the “planarian flatworm.”
Jessica Yi isn’t the only Inhuman that the pair view during this sequence, but she is the only one who is named. The scene is presented in such a way that implies Jessica Yi is an especially important discovery. Tarleton even seems shocked to learn about the specifics of her abilities. The focus on Yi has led some to wonder whether or not Jessica Yi is actually someone else from the Marvel universe.
Is Jessica Yi Based on a Marvel Comics Character?
From what we can tell (and we welcome any input from long-time Marvel fans who have more information on this subject), Jessica Yi does not seem to be directly based on a Marvel Comics character. At least that is to say that there doesn’t seem to be another notable Marvel Comics character that shares her name and abilities.
The closest comparison we can find is Jamie Madrox (a.k.a. Multiple Man). While Multiple Man’s created clones are often described as perfect replicas, it’s also been noted that they’re capable of living their own lives and thinking and acting independently. That aspect sounds similar to how Monica describes Yi’s ability, but it’s not clear if Jessica Yi is meant to somehow be a replacement for that character.