I always think of Regular Show whenever I think of park keepers, but whatever.

Fun fact: the surname Parker means 'keeper of the park' or 'park keeper' and was originally a title given to those who would guard and watch an area of wild land in post-Norman Invasion England, purging said land from bandits and investigating hedge knights. As it was introduced by the Normans, Parker comes from older Frankish variants, like Parquier and Parchier.