they could be from crusher`s tribe displaced or cave luckily goblins have been in baldur gate since the beginning and are common in faerun so custom goblins could fit in too since mind flayers dont care what race you are just that they can turn you into one of them face changing masks would be great as a goal a goblin player would like to get ahold of or a origin goblin has as a scavenged item they found

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