Talk:Spike/@comment-9056013-20140520020919/@comment-7345250-20140520031129

Satan, Tiamat (in modern depictions), the Dragon of St. George, Gorynych, Yamata no Orochi, Ryujin, Fafnir, Jörmungandr, and Shen-Lung are the only ones that come to mind.

Ryujin is probably the best candidate, being a passive-benevolent sea god unlike most of this list.