The latest casting rumor for Season 5 of Agents of S.H.I.E.L.D. could hint that a possible crossover with Inhumans is well on its way. That Hashtag Show is reporting that the ABC series is looking to cast to the Kree assassin Sals-Bek, who in the past has hunted Attilan's Royal Family.
Sals-Bek is a relatively obscure character having made his only appearance in 1995’s Inhumans: The Great Refuge. However, in that book he was tasked with killing Black Bolt's inner-circle while they were lampooned on Earth. Given that Medusa, Black Bolt himself, and other key Inhumans are in that very predicament at the moment as they're being hunted by Maximus' soldiers on Earth, Sals-Bek’s arrival could mean both shows are about to tie in, especially if Black Bolt's family remains on Earth.
Given that AoS is bringing back the Kree next season and that the series will be picking up with Coulson and his fellow heroes trapped in space, the cosmic side of the Marvel Cinematic Universe is certainly expanding its scope on the small screen.
AoS has already done extensive arcs with Earth's NuHumans and perhaps Sals-Bek’s mission will be to find those who experienced Terrigenesis transformations on Earth and kill them for the Kree. Either way, this Kree hitman spells trouble for Coulson, Quake, and the rest of the team, as they contend with all these galactic threats encroaching upon Earth.
Marvel’s Agents of S.H.I.E.L.D. will return to ABC on Friday, December 1, following the conclusion of Inhumans. The series stars Clark Gregg as Agent Phil Coulson, Chloe Bennet as Daisy “Quake” Johnson, Ming-Na Wen as Melinda May, Iain De Caestecker as Leo Fitz, Elizabeth Henstridge as Jemma Simmons and Henry Simmons as Alphonso “Mack” Mackenzie.