Of course If I really want to do this will have to generate my own art ... themes and style are the point.
Themes - relic weapons prominent Gugnir and Excalibur, 2 identifiable Martial Artists one engaged in decidedly non combat activity. a hand full of gods from Norse and Celtic myth...
Should definitely have some characters of Greek myth, like Herakles (perhaps portraying changing a rivers flow) or Odysseus (perhaps showing the Trojan Horse or a Blinded Cyclops).