OK, since everyone likes a legendary pokemon trio, I thought I'd make some out of some beta Pokémon!
Lycartic, the frostbite pokemon
Ice type
"It was said that Lycartic was made from the vast winters by the legendary Missingno, Lycartic is known by its flowing Mane that was rumored to resemble cold, fluffy snow."
Ultimate Lycartic
Ice/fairy
Lycartic's new form takes a more powerful and a "Aurora Borealis' like presence, its flowing Mane now has an Aurora light, when receiving the Ultimate Blessing.
Skeleattack, the fossilized golem pokemon
Ghost/fighting
"Skeleattack, also known as the Pokémon of the Paito ruins, is an interesting creature of the region. The pokemon is known by its Skeletal appearance and combat knowledge. It is a pokemon constructed by the pokemon known as Missingno, the Ultimate pokemon."
Ultimate Skeleattack
Ghost/fairy
This Form makes Skeleattack a more powerful and somewhat primal pokemon, when receiving the Ultimate Blessing.
Samelin, the flute player pokemon
Psychic/flying
"It has been known that Samelin plays a song when the sun rises in the Paito Region, its flute-like beak allows the pokemon to sing a tune of peace and harmony. Samelin is also the Pokémon of music as it was made by Missingno, the psychic/flying type is also a key figure of Paito's 'Forgotten fear' era."
Ultimate Samelin
Psychic/Fairy
When receiving the Ultimate Blessing, Samelin's feathers grew more ethereal than ever, it now has huge tail feathers and has wings that allows it to fly. Samelin can still plays its fluid songs but can also make new, recognizable songs that dates back to the 1936 Forgotten fear era!