Inter-dimensional world eating monster with one too many personalities

Could be billions of years old. For all we know, she - or it might not be even from this reality.

Takes on the voice of a female. (Mostly.)

The Huntress, The Wraith (former nickname..no longer used, since there’s a new Wraith in town boys), Oneshot

Eldritch

Sinistra wears mainly dark shades and dark blues. She is covered head to toe. She wears black boots, navy blue pants (with a little bit of armour added on them) and yet another black long sleeve shirt. Sinistra wears charcoal grey armour that mostly covers her shirt and pants, plus some random navy cloths here and there wrapped around herself. She has a dark blue cloak that she wears.

Her most eye catching feature might be her helmet; which is an odd shape. Think of the Xenomorphs from Alien. Thing of their heads. Her helmet somewhat looks like that, but the ends are wider; and more triangular.

There's a blue line that traces around the edge of the helmet. The helmet is made of similar material of her armour, an extremely durable type of unknown metal. Sinistra is known for having lots of sharp weapons; a modified sniper rifle of some sort, and a couple sidearms.

5'9. While not tall (when compared to some others of her universe) it should be noted that her height does not display her power and abilities.

Sinistra's Earth/false personality acts oblivious. She acts like she's clueless, but trigger-happy. She also acts extremely positive.

Her true personality is predatory. She's intelligent and calculating. She knows the weakpoints if you've worked for her while she was 'acting'. Still, she acts somewhat positive in this personality, but if things go wrong too many times, she is known to become very upset and aggressive.

She tends to underestimate her foes.

Her hobbies she had shown genuine interest in while on Earth are Journalism, collecting stuff, photography.. basically anything to do with nature. She likes studying it.

Her..hobbies that should be considered rather odd to most creatures would be wiping out entire species, destroying or claiming dimensions..Yeah.

Former Bounty Huntress (for a good half of the story)
Mostly a world eating monster
Insect collector