This series features a new type of lineup, this time exclusively designed for water warfare. Most new soakers in the series were piston-based (with the exception of the Hydro Fury), and came in red and blue. Like with past series, several previously-released series were inducted into this series as well.
The oldest soaker in the series is the XP-215, initially released in 2001 under the XP series. Blasters new to this series were all later re-released under the Nerf Super Soaker line.