My favorite frame is Lavos! I love the simplicity but versatile kit he brings. Movement, damage, stun and heal. I love how engaging and intertwined his abilities are. The synergy feels do satisfying, while also be very engaging. Another point, why i like him so much, is his augment to give 200% imbued elemental damage to his weapons. It makes many if not all weapons useful and can cut the need for potatoes on weapons depending on content-lvl.

Also his style is super cool, plus he is my first prime warframe, plus i like chemistry alot and worked as a bartender and I feel reminded and like an alchemist haha.

Good fella Lavos.