IESB.net chatted with Doug Jones, who portrayed Abe Sapien in Hellboy, about the sequel. Here’s a clip:
Doug reveals that while shooting Pan’s Labyrinth in Spain, del Toro stated that Abe will indeed have more screen time and that this time he gets a chance to fight some baddies. He admits that he has not yet read the script but that Guillermo promises that Abe will be on an equal playing level with Hellboy.
Read or watch the interview, in which he talks more about the character and a possible third film, at the link above.