|The Land Before Time character|
|Color:||Teal Blue/Spring Green|
|Debut:||The Land Before Time XII: The Great Day of the Flyers|
|Finish:||The Hermit of Black Rock|
|Voiced by:||Rob Paulsen(XII, TV series)|
Guido (a.k.a. Mysterious Guido by the official website and by fans), voiced by Rob Paulsen, is a character in the Land Before Time films and television series. He is a Microraptor gui, and first appeared in The Land Before Time XII: The Great Day of the Flyers. Although rumored to be multicolored, his feathers are presented in warm shades of green and yellow, mostly Jade. He has never seen another creature like himself. He is more of a comic relief character than previous guest characters. He later appears in "The Hermit of Black Rock", when he learns how to truly fly. Prior to that episode, he met Chomper and Ruby while he was babysitting Tricia. Guido refers to Chomper as "Chomper the Friendly Sharptooth" (a parody of Casper the Friendy Ghost). Guido and The Rainbow Faces are the only theropods on The Great Valley. Ducky says Guido a sharp tooth when Petrie see Guido that he think that he was scare. He do not like plants but he eats worms. He was the only Glider ( Others with only one specie are Yellow Bellies, Sharpbeaks, Thicknose ) in The Land Before Time (series). Spinosaurus was the only Sharptooth that guido see also a skeleton of a Tyrannosaurus in the Mysterious Beyond.
- Among the Land Before Time characters, Guido is the only few characters to have been eaten by a Sharptooth, the second being Petrie.