More and more spoilers surfacing online about "Agents of S.H.I.E.L.D." Season 4.

If you are an avid fan, you may be expecting two added characters. Talking about new characters, two of which rumored to be the Ghost Rider and his brother, while some rumor suggests it could be a robot, which could be a Iron Man like robot.

TV Lines' Matt Webb Mitovich said the ABC series is currently looking for actors to portray the roles of the new characters. The first character to be introduced on "Agents of SHIELD" season 4 is a Life-Model Decoy (LMD) named Aida, however, it is not confirmed if the second character would be the Ghost Rider.

Mitovich said that currently, the ABC series is still looking for an actor who will play the role of Aida. Based on his description, Aida is a very attractive robot, however, she moves quite naturally and speaks formally, just like Iron Man's Jarvis.

Mitovich only fueled a rumor that the Ghost Rider will join the season as he stated that the series will introduce a pair of Latino brothers, The fist character is "the most dangerous person in the room," he said, and the other one "is paralyzed in a wheelchair," he added.

The Ghost Rider description of Mitovich may not fit to the original one, Outer Places speculated he was describing Robbie Reyes, the 2013-2014 version of the character.

In the "All-New Ghost Rider" series, Robbie's brother named Gabe, is paralyzed in a wheelchair-bound, who looked up to him. Some rumor suggests that Ghost Rider might be working alongside Daisy/Quake, the character who appeared in an all-black ensemble in the season 3 finale.

Marvel and ABC were reported hinted the Ghost Rider's possible appearance in season 4 as they teased a photo featuring the Hellfire Chain on Twitter in June. Aside from that, the official Twitter account of "Agents of S.H.I.E.L.D." captioned the photo "Get fired up!"

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