Sebastian Johannes (セバスチアン ジョハネス Sebasutian Johanesun) is a Human with Quincy. Allied with the Ketzer (一身僧向 (ケトサー) Ketosaa; German for "Heretics", Japanese for "Partisan Monk Movement"), he serves as one of their Schatten Geschwader (影執行隊 (シャドー ジエチヱーダー) Shaten Jeschiweidaa; German "Shadow Squadron", Japanese for "Shadow Execution Corps"). His current ranking amongst the Ketzer is unknown.