Giants

Giants resemble humans in appearance, except that they are many times taller.

In mainstream media
The Smurfs encountered various giants. One of them was a young boy named Simon who was gone from his home and constantly cried for attention. Papa Smurf tried to be gentle with the boy, but Simon misunderstood Papa Smurf and ran off into the forest where he was found by Gargamel and given a magic ring that put him under the evil wizard's control. Papa Smurf and a few other Smurfs chipped off a piece of the ring and had Simon now under their control as they led him to his homeland to be reunited with his parents.

Another was a giant created by Gargamel called Dufus. He was created as a weapon to destroy the Smurfs. However, as Gargamel had made Dufus with a formula that used smurfberries instead of choke cherries, Dufus was unaffected by the smurfberry pies being thrown at him and instead wanted more. He became friends with the Smurfs and helped them plant more smurfberry bushes.

In the comic books, Bigmouth the ogre is referred to as a giant, although his physical stature falls within the same range as humans.

Empath: The Luckiest Smurf stories
Giants generally do not exist in the EMPATH: The Luckiest Smurf story series, since to a Smurf's perception all beings taller than themselves (including humans) are classified as giants.