Waldo is the Andorian ambassador to Earth.

Waldo is hardly an exception being a brilliant mathematician and engineer. He is very tall, distinguished and although logical to a fault, possesses a good sense of humor. The Andorians are quiet, logical, and focused on mental prowess. His best friend is Ambassador Zozo from Kirwin. Both ambassadors work closely with Commander Walsh and the Rangers, and are friends of the Foxx family.

Highly amusing when paired with Ambassador Zozo of Kirwin. Logical to a fault (can you say Vulcan?). The ambassadors are in very close contact with the Rangers and Commander Walsh at all times, and are friends of the Foxx family.

Waldo has a nephew nammed Nobus, and is close friends with fellow ambassador/scientist Tyko, and Tyko's wife, Thella(sp?).

Waldo won't use weapons (The scene in Mothmoose is not considered canon). Instead of fighting an enemy, he will let them charge, and come into contact with a forcefield he activates around himself. It's unclear (though very likely) as to whether or not Zozo and Waldo are the two "peaceful aliens" who came to Earth in the opening monologue.