Waterfilter

Waterfilter is the first episode of Ben 10.

Plot
Ben, Gwen, and Max's trip to Niagara Falls is cut short by the horrid Hydromanders - creatures menacing them and their fellow tourists.

Characters

 * Ben Tennyson
 * Gwen Tennyson
 * Max Tennyson

Villains

 * Hydromanders

Aliens Used

 * Cannonbolt (x2; first appearance)
 * Overflow (x2; first appearance)
 * Heatblast (first appearance)