A Team for Newbies

That would be the AR (Anti-Rain) team. Even though you can only get all five of them by progressing through the story (you can't get them through manufacturing either. So, unless you're a veteran, you'll only have one of each AR team member!) They possess performance that's not quite 5-star level, yet is comparable to it, despite being 4-star units. (SOP II, despite being a grenade dealer, can equip two accessory slots, making her viable as a regular damage dealer/ST AR-15 can also equip two accessory slots, allowing for higher damage output than other rate-of-fire focused dealers/M16A1 can equip body armor only usable by shotguns, reducing damage taken when tanking/RO, though a 5-star, is useful for short-term tanking) In the 'T-Doll Modding' feature, which requires an account level of 60 or higher, the remaining four members besides M16A1 become even stronger through modifications, truly earning their keep. (M4 gains the ability to deploy her main cannon when 3 or fewer allies remain, Star deploys her secondary armament, SOP II fires additional grenades, etc.)