|The following is based on Fallout 2 cut content and has not been confirmed by canon sources.|
Mr. Chemmie is a drug crafting computer found on Level 5 of the Environmental Protection Agency. He can be gained access to by using the east elevator on Level 3 to Level 5 Indigo.
He would have been able to make useful drugs (including rare ones like Psycho and Mentats). He was also able to make ERSis, an extremely rare drug used in cryo pods to stop the patients from experiencing Post-cryogenic syndrome. Unfortunately he can only make one.
The drugs he could make are various chems and "something special" which would allow you to get heart pills and ERSis.