• Agents of S.H.I.E.L.D. is an ABC TV series created by writer/director Joss Whedon and produced by Jed Whedon and Maurissa Tancharoen.

Agents of S.H.I.E.L.D. is an ABC TV series created by writer/director Joss Whedon and produced by Jed Whedon and Maurissa Tancharoen. (Photo : Facebook/Agents of S.H.I.E.L.D.)

The latest details and possible spoilers for "Agents of S.H.I.E.L.D" will feature a new LMD character being the JARVIS of the show and Ghost Rider debuting in the Marvel Cinematic Universe.

Season 4 of "Agents of S.H.I.E.L.D." will introduce three characters within the show as Phil Coulson (Clark Gregg) and his team will now deal with new threats, not to mention apprehend the rogue agent and Inhuman teammate Daisy Johnson/Quake (Chloe Bennet).

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The first of these characters is the Life Model Decoy named Aida and she is described as to be attractive and have fluid movements like a standard human, though her speech is a bit formal. Her speech patterns is said to be similar to that of Tony Stark/Iron Man's (Robert Downey Jr.) A.I. companion JARVIS. Aida will be a recurring character in the series as she was first teased by the end of season 3, TVLine reported.

Cast member Patton Oswalt first teased the existance of LMDs in "Agents of S.H.I.E.L.D." telling fans that Koening brothers could be LMDs.

Aside from Aida, the other two characters are said to be Latino brothers as one is described as being confined to a wheelchair, while the other brother is described as being the "most dangerous man within the room".

Several fans speculated that these brother could be Robbie and Gabe Reyes from the "All-New Ghost Rider" comics and that Ghost Rider will be introduced to the Marvel Cinematic Universe.

The first speculation of Ghost Rider going to the MCU is when a poster of "Agents of S.H.I.E.L.D." in this year's San Diego Comic Con featured flaming chains, ScreenCrush reported. Some fans speculated it could be the Inhuman villain Hellfire (Axle Whitehead) since he used a chain as weapon in season 3, but with the announcement of two latino brothers in the show, it seems that fans will see Robbie Reyes version of Ghost Rider soon.

In the comics, Robbie Reyes version of Ghost Rider came to be when his uncle Eli Morrow possessed him when Eli inhabited a Dodge Charger. He has every powers of Ghost Rider such manipulating hellfire, chains and changing the appearance of the Dodge Charger into its demonic form. Both Robbie and Eli constantly fight for control as Robbie knew that his uncle is a serial killer and wants to take control by feeding his lust for vengeance.

"Agents of S.H.I.E.L.D." season 4 will air on Sept. 20 on ABC.