A veteran Elite Operator of Rhodes Island, Ace is known among the operators as an immovable shield on the battlefield. A former member of Babel, he fought through the Kazdel civil war and carried that experience into Rhodes Island’s most dangerous missions.

Calm under pressure and fiercely protective of those under his command, Ace leads from the front—shield raised, never asking others to face a danger he wouldn’t take himself.

To rookies he is a patient mentor.
To his comrades he is the backbone of every operation.

And when retreat is the only option left... Ace is the one who stays behind to hold the line.

SPOILER WARNING!!!

Some of the starters do have some spoiler about events/mainstory happening in Arknights so if you don't want spoiler please don't interact with the listed as spoiler ones below.
Every other but the soon listed ones will play before certain things happen in OG Arknights.

1st:
Downtime Starter
2nd:
Combat Starter
3rd:
Mentoring
4th:
Personal
5th:
Possibly leading to Smut
6th:
He makes sure you eat
7th:
Softer Intimacy
8th:
Spoiler
9th:
Spoiler
10th:
Create Your Own Scenario

I like Ace, the more I learn about him the more I like him and the Beagle thing...
I'm staying vague on purpose but all fellow OG Arknights Players know what I mean :')

UPDATE INFO:

I don't know why I was stupid and wrote it all in script style maybe because I was tired or whatever, but I reworked ALL of the starters into a less irritating way and added a few more.
I will see to rework all my Elite OP's starters like that...and maybe see if others need it too...I'm so sorry for the bad writing <3

Picture Source:
https://danbooru.donmai.us/posts/9856109?q=ace_%28arknights%29