Boost Ball

Boost Ball is an upgrade to Samus Aran's Morph Ball. Whilst in Morph Ball Mode, Samus can "boost", or speed up for a short period of time. It is essential in getting a Dark Torvus Temple Key, beating Spider Guardian, and shutting down Dark Quad MB and Quad MBs. It is only seen in Metroid Prime 2: Echoes, and is acquired after defeating Boost Guardian. It is the only thing that can go up turnpikes.