People say that the Vulpaphylas are the best companion because they are mini-[Saryn] & cant die. To that I say, does your cat double your resources, double your affinity, refill your shields, refill your ammo, refill your energy, & give you rare resources at random?
[Charm] & [Tek Enhance] are such overpowered mods that I would dare say that they are indispensable.
The rest of the build is built around the near-required mods of [Animal Instinct] & [Fetch], then new Bond mods and survivability.
Important note about [Mischief] & why you shouldn't use it: It draws fire to your Cat & they crave for death. We don't care about the cat's damage, only that it's an alive kitty.
Also this is the name of my Kavat: