Gruties

The Gruties are a cut concept featured in Despicable Me 2.

General
In a deleted scene from DM2, Felonius Gru was bullied by the other children, all of which evade him due to him having "Gruties".

Gruties isn't a real disease, as Gru is never shown to be sick in the entire series.

Trivia

 * The Gruties are based off the cooties, which in turn, are also a child-based fictitious disease.
 * However, in the Netflix version, the Gruties scene was still seen.