Who?

Only one strange little creature disturbed this harmony as he watched the colorful scene with the keenest interest
There was whispering, "What's he up to?"
"What's he brooding about so fiercely in the midst of this joy?"
"Who is he?"
Suddenly, a voice cried out!
"Oh, Horrors! It's the White Rainbow Goblin!"

"The White One?"
"Yes! The White One!", shouted all the creatures, filled with fear
They had recognized him and were petrified by the sight of him
The White One, the Banished One, had turned up again
A long time ago his seven brothers had exiled him because he was the eighth Goblin
He was expelled from the Rainbow Goblins' clan, and his name was never spoken again