The Bydo are a living embodiment of evil in the R-Type series. It has the properties of a wave and matter. It diffuses easily and can fill any environment(R-Type final manual).

Classes of bydo

Small bydo: These small enemy's are weak and normal travel in packs.

Medium Bydo: Larger bydos that can shoot faster some times grown up forms of small bydos.

Large bydo: Huge bydos that appear in levels as mini bosses and have very high HP.

Huge bydo: These are the bosses of r-type and are the biggest and strongest enemy's.

Bydo Core: The Bydo Core (called simply Bydo) is the core of all bydo and is extremely powerful,not to mention being pseudo-invincible making it the hardest enemy in R-type history.