When the Bydo have reached Earth during the "Seed of the Bydo" incident during R-Type Delta, they already proven to be quite invasive. Inside the flooded energy reactor, there lived some aquatic yet deformed Bydo abominations. One such was the Keet Colony whose only biological function is to continously produce more Keet when threatened. This large mass of Bydo cells serves to somewhat function similarly to a beehive. It has no offensive or defensive capability.
When threatened, the Keet Colony sends out swarms of Keet.
Appearances[]
So far, they only appear in stage 2 of R-Type Delta.