Barty Blake is tall and blond. He wears a purple jacket over a white turtle-necked sweater, and purple pants.
He seems stiff and aristocratic. Like his wife he dislikes that Daphne isn't a prodigy like her older sisters and condemns her association with Mystery Inc..
He attended the wedding of one of his daughters, an unnamed astronaut daughter) who got married in a space-suit. His attire at that wedding included a purple sash, sword, and large gold medallion, suggesting he has a connection with foreign nobility.
The Blakes hosted a dinner party for Mr. Wang. Then later let the gang borrow the family boat.
He and his wife came to get Daphne out of jail. Daphne chose this moment to announce that she and Fred were engaged, to which he fainted at after hearing. He then later showed up after the Freak was caught to take Daphne home.