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[edit] Proposed Canon

Rex Cakes is a level 3 warlord serving the side of Goodminton around the time when Wanda popped. He is described as "awkward", having "a pasty face and a large gap between his teeth".^{IPTSF Text 17}

[edit] Real world references

His name is likely a pun on cakewrecks.com - a web-site dedicated to professional cakes having gone horribly, hillarously wrong.