In episode Ș on my Romanian Lore, the kidnapped characters would actually try to escape. C suggests I to use his bullet to get out, but he accidentally aims it out of the cave, which eventually hits  in episode U, killing her in result. None of the kidnapped letters managed to escape by the end of the lore, however.
@PhonicLover44 for the bases @wario100 for the base of E's cave (which I recolored from his G cave vector) and kidnapped A and I Mike Salcedo for Alphabet Lore