Plastoid (Arrowverse)

Plastoids are a hostile species with elastic bodies from the universe of Earth-19, who invaded their universe's Earth.

Biology
Little is known of Plastoid biology, other than they had elastic bodies that enabled them to shapeshift and stretch out their limbs. Plastoids are presumably humanoid and externally Human-like, as a meta-Human with elastic powers was mistaken for one, but it is unknown if that is their true appearance, or the result of their shapeshifting.

History
At some point in the history of Earth-19, Plastoids invaded the universe's Earth, ravaging its surface. While the Plastoids were repelled from the planet after a decades-long war, they had permanently eradicated several types of crops from the planet's surface, such as coffee. Additionally, in the wake of their invasion, Earth-19 Humans established the holiday of Thanksgiving to commemorate the end of the war, and banned gelatinous foods such as Jell-O, due to the similarities between the foods and Plastoids. One of the Earth-19 Humans, Breacher, vowed to kill any remaining Plastoids, later confusing an Earth-1 metahuman with similar powers for a Plastoid.

Appearances

 * The Flash s04e04 "Elongated Journey Into Night" (2017)
 * The Flash s04e17 "Null and Annoyed" (2018)
 * The Flash s06e17 "Liberation" (2020)