|“||Even if I fight a million battles, I shall remain victorious!||„|
|— Sir Arthur.|
|“||You've become more important than you think Silver Knight, even as important as the original.||„|
|— Valkyr to Arthur.|
Sir Arthur, also known as the Silver Knight or simply Arthur, is a brave and noble knight who had constantly venture into the depths of the Demon Realm and Ghoul Realm to rescue his beloved Princess Prin Prin, who gets captured by Malgor (who call himself Satan) and other Demons and Ghouls.
Even after his death he still helps heroes like Momotaru against threats from the Ghoul Realm as an archangel, although it seems he can't help with the problem directly.