Whirlipede

Whirlipede is a great Pokemon that acts as a suicide lead on offensive Spike-stacking teams, but it has a lot of competition from other Spikes setters in the tier. Having access to both Toxic Spikes and Endeavor makes it a really good alternative to them and brings a lot of utility to a team already, but with Speed Boost, Whirlipede becomes one of the fastest entry hazard setter in the tier, preferred over Roselia on fast-paced offensive teams that want Spikes on the field as soon as possible, and has a niche over Venipede with overall greater Defense. However, it has pretty bad base stats apart from Defense, making it unviable on defensively oriented teams. It also has to rely on its last moveslot to do damage, which will be taken up by Endeavor most of the time, which gives Whirlipede more utility than consistent damage, limiting its effectiveness.