|Species:||Great Horned Owl (Bubo Virginianus)|
|Family and Relatives:||N/A|
|Appears in:||The Capture, The Siege, The Burning|
|The highest ranked official, the Ablah General, at St. Aggie's.|
Sketch was the leader - the "Ablah General" - of the St. Aegolius Academy for Orphaned Owls. Her second in command is Spoorn, and two of her top lieutenants are Jatt and Jutt. She projects the image of having great power, but one of the only reasons she remains in power is by making all the owls under her command powerless through moon blinking. The library of St. Aegolius is off limits to all except Skench and Spoorn, the only two owls able to read.
Very little is seen of Skench in The Capture. When Soren and Gylfie, under the instruction of Grimble, finally learn to fly, Skench bursts into the library in full armour. Before she can advance toward Soren and Gylfie, the force of the flecks stored in the library attract her metal armour and slam her against the wall. While she's stunned, Soren and Gylfie manage to escape, but once she comes to her senses she kills Grimble.
The chaw of chaws were sent to St. Aggie's to find out if the Pure Ones had sent spies (which they had). Skench was supecting this and was convinced when Twilight made a speech about humble servants, but she let them join St. Aggie's. When the Pure One spys attacked the chaw of chaws, Skench took place in the fight with the other St. Aggies' owls. After that when Skench discovered that some of the St. Aggie's owls were trying to discover the power of flecks and were smuggling them to make them into weapons, Skench killed them right away.
After the fall of St. Aggie's, Skench and Spoorn found their way to the Great Ga'Hoole Tree and sought refuge from the Guardians. They were granted this despite Soren's inner protest. When asked to teach them how to fight with fire, Soren utterly refused. Even during the invasion of St. Aggie's, the other Guardians did not trust Skench. Their suspicions eventually proved to be true as Skench turned on them. However, she was immediately killed by Soren in the attempt, who struck her with a burning branch and knocked her into a forest fire.
- In the film adaptation, Skench is replaced by Nyra as the Ablah General of St. Aggie's and the Pure Ones occupy the canyons instead of the St. Aegolius owls.
- One of the owlet-nappers is a Great Horned Owl, so that could have been Skench. That owl was carrying Pete (The white Long-Eared Owl with two black spots on him, one on his left eye and one on the back of his right wing and said "No, I don't wanna be a picker!").
- She shares a similiar fate to what happened to Kludd in the movie. Both characters were thrown into a forest fire by Soren, however Kludd survived being burned and Skench was killed.
- In Portuguese adaptions, Skench is always referred to as a male owl, likely because her name sounds more masculine than feminine.