Ho Oh

Ho-Oh is a seriously underrated Uber. 50% burn is nothing to play with. It is an extreme staller, as well, with Recover, 106 base HP, and 154 base Special Defense. The trick to Ho-Oh is to try and burn any physical attackers you can, and then use your massive Special Defense to keep you alive on that front. Unlike Lugia, who, with a Calm Mind set, likes some Defense EVs and tries to boost up in the face of physical attackers, Ho-Oh has the ability to severely cripple them. However, its mediocre Speed (tied with Kyogre, Groudon, and Deoxys-D as the slowest Uber) is what holds it back. It has trouble with the physical attackers, because they're likely faster and carry Rock Slide, and its weaknesses to Thunder, Thunderbolt, and Surf hurts its ability to wall special hits. Ho-Oh should always be used with Groudon. Kyogre is one of the most common Pokemon in Ubers, and you don't want Drizzle blocking your Sacred Fire. With Groudon, you can overwrite Drizzle with Drought to boost your Sacred Fire instead of weaken it. This also makes enemy Surfs be at half power, and Thunder gets 50% accuracy.