White Collar star Tim DeKay has been cast as Sen. Christian Ward, Grant's abusive older brother.
Episode 6 of Season 2, titled 'A Fractured House', will be the first episode in which we will see DeKay, but there is no word though on how many episodes we will see him in.
Back in Season 1, Grant opened up to Skye (Chloe Bennet) by telling her terrible childhood stories about his older brother. Christian would frequently force Grant to beat up their younger brother against his wishes. In one specific instance, Christian pushed their younger brother into a well and wouldn't let Grant save him.
The relationship between the two brothers reached a breaking point when Grant burned down his parents' home, and Christian was inside. Christian survived but pressed charges, which is how Grant ended up at the juvenile detention facility where HYDRA/SHIELD double agent John Garrett recruited him.
DeKay is best known for his role on USA's White Collar as Peter Burke, which premieres its last six episodes on November 6 but he has also has made guest appearances on Body of Proof, Hot in Cleveland and Chuck.
Agents of SHIELD airs on ABC on Tuesdays at 9 p.m.