Sydecka

Sydecka (サイデッカ) is a big rhinoceros-like enemy robot in Mega Man 8 and Mega Man & Bass. Found mainly in the jungle levels (Search Man's stage and Burner Man's stage, respectively), and also in both of King's stages and Dr. Wily's stage in Mega Man & Bass, it can either launch missiles or other explosive weapons, or shoot its drill-like horn (it is invincible as it does this).

Etymology
Its name is probably a combination of Japanese words, "sai" (サイ, rhinoceros) and "dekkai" (でっかい, big).