Grumbell

Grumbell appeared in 2013 video game called Mario & Luigi: Dream Team. Grumbells are living floating dumbbell creatures that appear in Mario & Luigi: Dream Team. In the field, Grumbells float around at high altitudes. If one spots Mario and Luigi, it will follow them at that altitude, and when it gets right above them, it will drop out of the air to try and land on them, if failing, soon rising back into high altitudes again.