Donald J. Blake is a medical doctor and former boyfriend of Jane Foster.
- "It says here he's an M.D."
- ―Phil Coulson
When Thor was captured by S.H.I.E.L.D. after attempting to obtain Mjølnir, Erik Selvig was able to get him released from custody by posing him as Donald Blake. Phil Coulson questioned Selvig, especially after learning that Blake was a physician, not an astrophysicist, but he allowed Thor to leave.
- Jane Foster - Former Love Interest
- In the comics, Donald Blake was the name of the mortal alias that Thor took up while he was living on Earth as part of Odin's test to learn humility.
- Originally, the persona of Dr. Donald Blake was going to be in Thor. Kevin McKidd was considered for the role.