Johnny Cage d. MokapThe fourth and final character in the Injustice DLC Season Pass will be revealed next week -- but the E3 festivities may not be an end for DLC additions!

Creative Director Ed Boon took to twitter (@noobde) to confirm the upcoming reveal of the mystery fourth character, who will feature in an official announcement on an unspecified TV show. Injustice: Gods Among Us will be present at E3 2013 (Electronic Entertainment Expo), which takes place June 11 - June 13 in Los Angeles.

The micro-blogging quotes can be interpreted as the first acknowledgment of more downloadable characters to come, but actually only specify that remaining Season Pass character(s) are based on popular fan requests. That much certainly gels with the post-credits appearance of Martian Manhunter in the recent reveal trailer for DLC character #3 - Scorpion. He stops short of confirming any future plans, however. Widespread rumors previously pegged General Zod -- of the upcoming Man of Steel film -- to be among the four Season Pass characters.

Boon's tweets come as fans offer mixed reactions to the inclusion of a Mortal Kombat guest character in the DC Comics fighter. Particularly vocal fans took the official Injustice Facebook to voice displeasure, demanding a fifth Season Pass character to balance the unannounced guest.

In teasing the possibility of more characters; Boon made glancing reference to a similar controversy that erupted around Mortal Kombat (2011) guest download - Freddy Krueger. He refers to the character as "the best selling" of the four, who were later included as part of the Mortal Kombat: Komplete Edition (2012).

Injustice: Gods Among Us DLC is available now via PlayStation Network & Xbox LIVE. Lobo, Batgirl & Scorpion are the first three DLC characters in the Season Pass; available individually for $4.99 each (400 MS Points). A wide range of alternate costumes are also available.

Check out some of the reactions to Scorpion's "surprise" arrival from The MkOmmunity [full feature]. Register to share your thoughts on all the major topics in the DC Universe Injustice & Mortal Kombat forums!