What is scrappy doo?

Here's some information about Scrappy-Doo, presented in Markdown format with links:

Scrappy-Doo is the overly enthusiastic and energetic nephew of Scooby-Doo. He was introduced in the Scooby-Doo franchise in 1979 in an attempt to boost ratings which had been declining. Unlike the original format of the show where Scooby and the gang stumbled upon mysteries and were initially frightened, Scrappy was eager to fight monsters, often shouting his catchphrase, "Puppy Power!" and "Let me at 'em!"

His brash and confrontational personality was initially popular and credited with saving the show, but later became a point of criticism. Many fans felt that Scrappy's presence changed the dynamics of the group and made the show less about suspense and more about direct confrontation. This led to a general dislike of the character in the long run.