Head Engineer

The head engineer is a character of the day who appeared in Bibarel Gnaws Best!. During his appearance he was only referred to by his profession.

When Ash and his friends were going to Solaceon Town, they encountered the Mayor and the head engineer, who told Isis that she needed to complete the bridge in time. Afterwards, he walked off, commenting about his reputation. The head engineer later returned when he noticed no further progress on construction. He was overcome with rage and called out his own Pokémon to get the job done, ignoring Isis's and Brock's reminder that Bibarel's help is needed to cut the quarried stone to the right dimensions. As a result, Bibarel attacked his Rhydon when it used Horn Drill. The head engineer used his other Pokémon to beat up Bibarel to quickly get the job done.

The group, seeing what Bibarel was trying to do, battled the head engineer's Pokémon and defeated them. When the head engineer used his digger to dig through the quarry wall, a large rock that came from the expert stonecutter's Machamp knocked the digger over. The head engineer was also exposed by the expert stonecutter as corrupt, having designed blueprints for the bridge being built knowing it would collapse. Consequently, Isis and the expert stonecutter fired him, and the head engineer ran off along with his Pokémon.

(Source: Bulbapedia)