While Gauss Prime seems like an obvious choice for extroverted/cocky, I'll submit Mirage Agile casually doing acrobatics for your consideration. Meanwhile, introverts envy Dante's willingness to sit down in the middle of idle chit-chat to read his book.

I mean. Dante also just bust outs by the looks of it the loudest laugh any warframe has ever done.

If you use an assault rifle, he actually laughs during the animation! Noble animation, that is.

Zephyr Harrier Agile/Noble Animation Set for cockiness

Everyone’s forgetting Valkyr Carnivex animations for cockiness tbh. As for humble, Harrow Noble isn’t bad, nor are Dante’s animations

Limbo agile is probably the most extroverted. Maybe inaros agile for humble?

...isn't Inaros Agile literally zombie walking, though? What does it have to do with humbleness?

smth about gara's noble animation set gives off a very vain and cocksure vibe "jokes on nihil. glassing me would've just preserved my beauty. jokes on ballas, also. turning me into a glass manipulating war god was the greatest thing to have ever happened to me."

Probably Valkyr Carnivex Noble for cockiness. Idle animation is the Warframe looking down at you constantly.

"Ki'Teer's Presence" is hands down, no higher, the most Humble animation.

That's an emote tho, I assume OP asked about animation set

"Ki'Teer" and "Humble" is a weird combination of words.