Complex sentence: Since melting is his only ability, Meltman is very unhelpful and a borderline burden and is considered by the rest of the League to be their personal servant, often fulfilling such chores as getting them sodas and donuts.
Split into simpler sentences: Since melting is his only ability, Meltman is very unhelpful and a borderline burden. Is considered by the rest of the League to be their personal servant, often fulfilling such chores as getting them sodas and donuts.