Son of Mine

Son/Brother of Mine was the leader of the Family of Blood.

Biography
Having assumed the body of Jeremy Baines from Farringham School for Boys, he led his family in a chase to catch the Tenth Doctor in order to gain his immortality; otherwise, they would die in three months time.

After the Family's defeat, the Doctor suspended Son of Mine in time and had him watch over the fields of England as a scarecrow.

Noticeably, he possessed a manner of talking that made many of his consecutive sentences run into each other, and was probably the most intelligent of his Family. (DW: Human Nature/The Family of Blood)