He was voiced by Jon Bauman.
The Smooze is a genuinely terrifying being, especially giving the setting it was in - with the ability to grow to gargantuan sizes it spread across all of Ponyland (the original Ponyville) and buried anything (living or not) in its path completely ruining the land and turning once paradise-like fields and castles into barren wastelands. It also threw chunks of itself around that when attached to living beings turned them "mean" and "grumpy" (which despite the childish language is actually a more dangerous threat than one might think as removing living creatures' ability to care about each other can lead to apathy and despair (also without the ability to care for other beings people often develop sociopathic tendencies) ).
The Smooze was semi-sentient, able to form hands and faces but only able to express rage and malice. This is shown with animalistic roars and grunts (as well as limited speech (see trivia). The ponies were originally powerless to stop the beast after the witch Hydia released it. Even the Rainbow being ultimately overwhelmed by the Smooze's power.
Yet just as the Smooze seemed ready to devour the last bit of Ponyland not corrupted by its presence, the Flutter Ponies arrived - using their magic they managed to cast the Smooze away and undo its evil before lifting the mass of slime into the air and dumping it back into the volcano it came from along with Hydia and her two daughters.
Generation 4 (Friendship is Magic)
- Main article: Smooze in Heroes Wiki
Smooze returned in the series and first appeared in the episode of the fifth season called Make New Friends but Keep Discord.
- The Smooze is often compared to a Shoggoth from Lovecraftian lore, though it is unlikely the creators intended it to be this (considering the age group the movie was for) it does share some striking similarities.
- The Smooze, despite being the secondary villain, is arguably one of the most powerful villains the Ponies ever faced and was able to overpower the same Rainbow that destroyed the previous antagonist, Tirek - however it was no match for the magic of the Flutter Ponies.
- The Smooze was seen to have limited intelligence beyond simple rage as it arrogantly states "you can't stop me!" and "don't even try!" during its introductory song (it is also shown as taking delight in terrorizing the animals of Ponyland).
- The Smooze is also compared many times to Hedorah.
- The Smooze is also the inspiration to Pokemon characters: Grimer and Muk.
- The Smooze was voiced by Jon Bauman, who also voiced Iggy from the Hanna-Barbera movie "The Jetsons meet the Flintstones".
- The Smooze is one of the original villains to be killed, others being Tirek and Lavan.