Andrei Sergeivich Kalinin

Lt. Commander Andrei Sergeivich Kalinin is a supporting protagonist in the light novel and anime series Full Metal Panic!. He is a member of Mithril and Sousuke Sagara's father figure and commanding officer. He is also one of Teletha Testarossa's military strategists with the rank of Lieutenant Commander, fulfilling the role of Operations Director.

He is voiced by Akio Otsuka in the Japanese version of the anime and the late Mike Kleinheinz in the English version. In the English version of Invisible Victory, he is voiced by Kent Williams.

Appearance
Kalinin is a tall, middle-aged man with grey hair, a moustache and a small beard that covers his chin. He is usually seen wearing his Mithril uniform.