Who to ACTUALLY build in Arknights and WHY

Here is my full take on who you should level as a new player in Arknights. Not to say every other character is trash or this is the way you MUST play, but this is in my opinion the most efficient use of resources for a new player. We start by going over most of the three stars, then highlight some key four stars to really get you started 0:00 Intro 1:17 Vanguards 2:46 Guards 6:28 Snipers 7:27 Defenders 8:25 Casters 9:58 Medics 10:49 THE GOLDE- Specialists & Supporters 13:15 All Stars 14:20 Myrtle 16:42 Perfumer 17:25 Sussyroo 17:58 Mayteor 18:32 Cutter 19:14 Tortoise and the Bear 20:25 Click 21:14 Mousse 22:00 Jaye 22:21 Pinecone 22:52 Ethan 23:27 Wrap-Up