|This article is about a/an ally in Sekai Ninja Sen Jiraiya.|
|Castle Ninja Baron Owl|
|Season:||Sekai Ninja Sen Jiraiya|
|First Appearance:||Jiraiya VS The Sorcerers Clan|
|Last Appearance:||The End of the Sorcerers Clan! Farewell, Pako and Jiraishin!!|
|Number of Episode|
Full list of appearances
Castle Ninja Baron Owl (城忍 フクロウ男爵 Jōnin Fukurō Danshaku?) is a British ninja descended from a Crusader who resembles a knight. Rides white horse named Juji-Go (十字号 Jūji-Gō?). He wields a broadsword called the Cross King Sword (十字王剣 Jūji Ō Ken?), as well as crucifix-shaped shurikens. He challenges Jiraiya for the possession of his clay board in order to obtain the Pako and use it for peaceful purposes as a send-off to martyrs that had die for noble causes, but later becomes his ally. Most of his dialogue consists of a mixture of Japanese and English.