Constellation:

Character:

The three triplets stand by and tend to anything that Claude orders them to do. Their names are Thompson (his fringe falls directly to the center), Timber (his fringe that is swept to the left) and Canterbury (his fringe that is swept to the right). Like Hannah, they appear to be terrified of Alois. Also unlike the Phantomhive servants, they are very skilled in household work. All three are voiced by Kenichi Suzumura in the anime.

Source from Wikipeida