Blissey

Blissey is largely overshadowed by Snorlax due to Snorlax's incredible special bulk being complemented by tremendous offensive power. Blissey has even greater special bulk than Snorlax but pales in comparison in terms of the damage it can dish out. Its primary role outside of simply taking hits is to cure its team of status with Heal Bell, and its remaining moveslots tend to be used to deter foes that might otherwise try to take advantage of it. Blissey does have access to interesting options such as Counter and Thunder Wave, but unfortunately they are incompatible with Heal Bell, so Blissey can only make use of them when it has dropped what is arguably its most useful move. Nonetheless, it is possible to play Blissey aggressively by taking advantage of its access to coverage moves, status moves, and Counter. Blissey's biggest flaw overall is that it struggles to deter many dangerous Pokemon like Snorlax and Nidoking, as well as struggling to fit coverage for both Cloyster and Forretress on the same set. As long as Pokemon on the opposing team have Rest, it struggles to make any offensive progress whatsoever, unlike Snorlax and Raikou, with which Blissey competes for the role of special wall. Furthermore, it is susceptible to being OHKOed by Explosion from the special attackers it would ideally be walling like Exeggutor and Gengar. Despite its drawbacks, Blissey still takes special hits better than any other Pokemon by far and is therefore a worthy consideration for defensive teams.