[quote=@Mistress Dizzy]
I'm having trouble finding data on weaknesses/strengths of Personas... I know Garu will absorb itself, but I'd love some help figuring out the rest. I've been walking through the wiki for a while and I'm just getting more confused.
[/quote]

Clotho blocks wind, reflects nothing, absorbs nothing, resists nothing and is weak to fire. 

At least in P3.

P4 version is a bit stronger and reflects wind, while none of the other stats are affected.

My recommendation is to go with the P3 stats to start with although I'm a bit unsure what power level [@Crimmy] wishes to start with.  

The wikis have little charts for each game and I'd recommend scrolling down to the Persona charts. Now if someone is making a custom persona based off a mythology feel free to shoot me or [@Crimmy] a message and we'll help brainstorm things for you. This applies for anyone needing help with coming up with Arcana or Personas in general of course.