Your allies are mushy, squishy and weak. Your enemies are dangerous and powerful. There are ways around this, but you cannot allow your allies to die so easily. As such, those you designate as allies grow powerful biological scales over themselves, capable of stopping most kinetic impacts (up to even Behemoth punching them) and even esoteric defenses that allow your allies to withstand up to 40% of the damage they would normally take by the enemy.
The scales have a third function. As the biological scales grow over your allies, they undergo a biological change, allowing them regeneration comparable to Lung in his base form, as well as Breaker defenses half that of Immune Response. These biological alterations fade with the scales after the battle ends, but they will allow your allies even further survivability.
If you do not have allies, you can instead grow them from yourself, biological living entities made of these same scales. They are much weaker, and far more stupid, and will only ever last two minutes, but you can create a dozen before replenishing.