Bop

Bop and his twin Bip are the 2 most trusted minions of the king of Smoo. He sends them out to other planets on missions, most notably whenever he requires Akiko. 
 
The two are identical and often are mistaken for each other.                                                              
 
When the come to pick up Akiko they drop off a robot clone of her who will live her life or her while she is away. They often drop her back home too and collect the robot when the mission is complete.