Archimedes

Archimedes is the deuteragonist of the Magic Tree House series. He is Merlin's pet owl who has the ability to speak like a human.

Physical appearance
Archimedes is a brown pygmy owl with yellow eyeballs, and an orange beak and feet.

Personality
Archimedes is known for being somewhat grouchy and sarcastic, especially in the morning. Though he is loyal to Merlin, he is not afraid to point out the Wizard's shortcomings and often does. He is, however, very well educated, and possesses a great deal of practical knowledge.