In Borderlands 2, there are midgets, and there are goliaths. These two enemies have badass rank missions for killing them. There are also midget goliaths. What do these count for? Just midgets? Just goliaths? Both at the same time? Neither?
According to the Borderlands Wiki, midget goliaths are a variant of goliaths, just as there are midget versions of other entities in Borderlands 2. Midget goliaths count as goliaths for badass rank.