Ho-oh is a fire and flying type legendary Pokemon. It’s known as the rainbow Pokemon, and is known as Houou in Japan. It has strong moves like Sacred fire, sky attack and extrasensory. In the anima, 300 years ago it lost its trust to humans due to their destruction, and how they used Pokemon in bad ways. When the Tin Tower burned to the ground, it flew away, and never contacted itself to humans since. Ash is one of the few humans who were lucky to see it, being that he saw it three times during his adventures, and has a close connection to Ho-oh. Ho-oh also resurrected three characters, namely Suicune, Entei, and Raikou that were caught in the flames, who now watch over all humans until the day Pokemon and humans become one, then Ho-oh will return.
Suicune is a water type legendary Pokemon, and is known as the north winds. It’s also known as Suikun in Japan and has the ability at purify dirty water. It can learn strong moves like aurora beam, gust, and hydro pump. In the anima, Ash has seen Suicune several times during his adventures, and seems to have a close connection to it.
Suicune is part of the trio legendary beasts, the other two being Entei and Raikou. Raikou is an electric type legendary Pokemon, and is part of the trio beasts. It’s known as the thunder Pokemon, and has the same name in Japan. It can learn strong attacks like thunder fang, thunder, and crunch. In the anima, Ash saw one once when he was at crown city, Raikou being one of the crown city guardians, the other two Entei and Suicune, and all three were shiny Pokemon as well. Entei is a fire type legendary Pokemon, and is one of the trio beasts as well. It’s known as the Volcano Pokemon and has the same name in Japan. It can learn strong moves like flamethrower, fire blast and extrasensory. In the anima, Ash has seen it a few times during his adventures, one time befriending a boy who wanted to catch one, but failed when Entei used Roar to end the battle and escape.