Shiva model!

[Inaaca]

Also keep in mind summons alao are relates to the lore, these aren't creatures willing to simply help out for a few mp. These are fierce otherworldly beings. There's the need to make the creature look like a boss since it is going to have that role. While this is a no brainer for creatures like Ifrit, summons like Shiva, Moogle King, and others still require that touch.

Thing is, what tribe has Shiva in the first place?? Certainly not the sahagin...

The Sahagin's primal is Leviathan.

We haven't seen Shiva's beastmen race yet, but hints have been dropped that it's a race of large creatures from the northlands.