when does ghost rider appear in agents of shield
season 4
Agents of S.H.I.E.L.D. (season 4)
 They are joined by John Hannah who was promoted from his recurring guest role in the third season. 
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Agents of S.H.I.E.L.D. (season 4) [SEP] Introduction
The season saw series low viewership, but was still considered to have solved ABC's problem during its new Friday night timeslot, and the series was renewed for a fifth season in May 2017.