So, I was reading “Tondemo skill de isekai hourou meshi” and there’s this Fenrir named Fel. It clicked to me that aside from Fel not being a unique name, it was the first and last syllable of Fenrir. (Feru=FEnriRU)
Another one is the Byakko’s name. Byakko is spelled as 白虎. Kohaku meanwhile is spelled as 琥珀. It’s not exactly the same characters but wordplay is wordplay.