Have a question to ask UK again.
Howdy RPWT buddy,
apologies for not seeing this earlier.
Last time due to my poor English make some communication trouble.In fact my first language is Chinese.But like to shame this I can't find anything about Ma Yuan the Godslayer.So back to ask UK about it.
Ma Yuan the Godslayer was a monster in the original Deities & Demigods/Legends & Lore book from the 1980s.
However, the actual mythology is a bit flimsy (as far as I can tell).
In D&D the Monster is a massive intelligent multi-armed, multi-eyed Godzilla type creature with a magical weapon that shapechanges into any magical weapon you want. It is said to be a slayer of minor gods.
In the only mythology I can find it was (IIRC) a scaly female 'ogre-like' monster.
I much prefer the D&D monster.
I have been brainstorming Tarrasque variants to parallel various Godzilla variants. Albeit the truth is the Tarrasque is far more like Anguirus (for those that know their Kaiju).
But for the sake of argument imagine that there was one Tarrasque per planet and various races might manipulate a Tarrasque for their own reasons.
Ma-Yuan (D&D version) could have been a Tarrasque manipulated by a race such as the Grigori who prize intelligence above all else.
I sort of see that Ma-Yuan as a sort of galactic bounty hunter.