After looking through fan art of these two and notice there wasn't much art of them as a team since there both from olden times and quite the fighters on both Project X Zone and Namco X Capcom which their fans would probably leave nice commentary about these two below.:)

Drawn By:

Art Style:Cartoon/Anime...

Arthur The Knight from Ghost and Ghouls...

Valkyrie from Legend of Valkyrie......

Theme Music:https://www.youtube.com/watch?v=PXeA_Z9YgHY&index=19&list=PL6akIKaXBeU1TwUbeJRGMLFiPy3C7aCA1