Eri is one of the first units in the Regular Army that the player can obtain for free (others being Marco, Tarma, and Fio). She's notable in that she can decrease the charge time for specials of all Regular Army units when included in a deck (even if she's never actually sent out). Easily the most powerful commando, her range continues to increase as she levels higher, and at the highest levels she can easily kill many weaker units from well over half way across the map. Her low health and lack of pierce decreases her utility against stronger enemies, however.