Warframe: Khora and Lavos

The cat and the snake whippers.

Khora

My first recommendation is to only passively farm for this warframe as her blueprints come from Sanctuary Onslaught. You will already be doing SO for a lot of things - ranking up other frames, weapons, Tenno powers, then frames and weapons again when you forma them so just collect her as she comes. You might go crazy if you specifically only do SO for her as the drop rate is low.

The "cat warframe" is a very PG description of Khora, who does look like a cat woman and has an immortal cat as a pet (in addition to your regular pet/companion). What she actually enjoys is wrapping enemies up in wires to stun them (the cat pet also wraps enemies in wires), sometimes dangling them from the ceiling (which for some reason makes them hostile to their friends), and whipping them like the bad, bad things they are. This makes infested particularly easy, but despite my best efforts to prep her for Steel Path interception, she just keeps running out of power and has very low survivability against any SP foe with a firearm.

Lavos

"The snake" is also a misnomer for Lavos, who is acquired from the Entrati syndicate store. He is actually an alchemist that looks snake-like and has twin snakes he can whip out at enemies which restore his health. He also has a nifty speed slide, a pulsating flying drone, and a whirling AoE all of which can be imbued with almost any status you like (he can't innately summon puncture, slash or impact).

Not only does he have instant access to almost any status effect in the game, he also does all this with 0 energy! This is because his powers simply work on cool downs which probably appeals to any World of Warcraft readers. While he can be a pretty tough cookie, especially with the right weapons, I don't have a purpose for him that my firewalking Loki can't already do - outside of energy drain missions I suppose.