| Hey, aren't you that plant lady, Poison Oaky?|
|Affiliations:||British Secret Service|
M1 was one of the heads of British Secret Service.
M1, M2 and M3 were discussing the disappearance of Agent Frederick when Batman and Robin appeared before them. None of the heads was very keen on sharing secret information, but when Batman promised them he could capture Red Claw, they pointed him towards Blairquhan Castle, Britain's last land based missile silo.
This character was never referred to by name in the episode or credits, but since his two colleagues were identified as "M2" and "M3", it is logical to assume this character is named "M1".