Wellingham is the sarcastic Mister Handy programmed to attend to the needs of the affluent citizens of Diamond City, additionally programmed for prejudice against the "low-lives" infesting it (i.e. anyone not rich and/or powerful). It's also supposed to cater to the more eccentric tastes, such as Clarence Codman's desire for a deathclaw egg souffle. Wellingham is perfectly capable of hiring Gunners for the job, even.[1][2]