Submarine Eggman II (サブマリンエッグマンII Submarine Eggman II?) is the seventh boss in Sonic the Hedgehog 2, that the player has to encounter at Oil Ocean Zone. The player has to do eight hits to defeat submarine mobile, that is piloted by Dr. Robotnik. Unlike its counterpart from Hill Top Zone, this version of Submarine Eggman looks like a submarine-bullet-like machine. It has black and yellow stripes, as well as yellow bottom and side headlights. It is also known to have two different attachments for different attack techniques.