|Hair color||Gambogeish gray*|
|Residence||Read Family Farm, Ohio|
|Family||*Arthur Read (great-grand nephew)|
|Cartoon debut||"The Rhythm and Roots of Arthur"|
|Voiced by||Roy Lewis|
Theodore Read, also known as "Theo," is Arthur, D.W., and Kate's great-grand uncle. He’s the brother of Thora's father. He celebrates his 85th birthday in the special "The Rhythm and Roots of Arthur."
Theo is an anthropomorphic aardvark with a dark brown complexion. He wears a gray button-down shirt with a bowtie, a black hat with a red band, brown pants, brown belt with a gold buckle and red suspenders. He has a gray mustache and thick gray eyebrows.