Junior assistant

Junior assistant was the title gave to Owlowiscious to help out  with his chores.

Spike was initially upset over hearing that and believed Owlowiscious to be a no-good bully out to steal his job, even going as far as to frame Owlowiscious for the murder of a rat, but Spike ultimately grew to befriend the owl after he and Twilight saved his life from the territorial Gostir.