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Benjamin is a character of the day who appeared in Gone With the Windworks!.

Benjamin is an elderly security guard who works at the Valley Windworks. He tends to sleep in the camera control room while his fleet of Magnemite survey the complex.

While Ash and his friends were looking for Lyra's Marill, they found themselves trapped in the Valley Windworks' basement. Benjamin remained dormant throughout the whole ordeal, forcing the group to escape through the air-duct system. He woke up in time to wish Ash and his friends well on their journey before falling back asleep.

(Source: Bulbapedia)