Krabby

Krabby seems appealing due to its high Attack stat, usable Speed, and good ability in Sheer Force, allowing it to be a strong cleaner. However, it faces stiff competition from other physical Water-types in the tier such as Corphish and Totodile, as they have better movepools including ways to boost both Speed and Attack in Dragon Dance and a priority option in Aqua Jet, both of which Krabby lacks. These Pokemon also have better bulk, giving them an easier time setting up than Krabby, whose poor Special Defense grants it limited setup opportunities. This forces it to opt for a Choice Scarf revenge killer set to differentiate itself, which does not have a serious niche due to the limited value of Water as its sole STAB attacking type.