>According to a text dump of Dawn of Sorrow, Hammer was likely to be included as a playable character in the hidden Julius Mode. The Dawn of Sorrow Julius mode is very much like Castlevania III - Trevor/Julius Belmont, Sypha/Yoko Belnades, and Alucard. Thus, Hammer would have been Grant Danasty's counterpart (the two have a similar physical appearance).
http://castlevania.wikia.com/wiki/Hammer