|Name in Japanese||アマデウス|
|Voice Actor (Japanese)||Eiji Maruyama|
|Voice Actor (English)||Mark Stoddard|
|Affiliation||ISDA, Lindworm Unit|
Amadeus (アマデウス Amadeusu?) is Sieglinde's Dragon partner, who seems to act more like her butler. Despite his elderly looks, he is a competent fighter and cares deeply for Sieglinde, constantly worrying for her safety.
His name is based on the name of Sieglinde's now-deceased dog, and his appearance is similar to Sieglinde's grandfather.
He is a gravity type dragon. He is able to unleash large bursts of gravity in his Communicator form. He has a bulky form as a dragon resembling a bomber, which does not hinder his ability to fly, and he attacks with bursts of gravity waves.
|e v||Lindworm Unit|
|Members:||Raina Cromwell | Howlingstar | Akira Soya | Machina | Sieglinde Baumgard | Amadeus | Kazuki Tachibana | Keiichi Amagi | Spirytus ||