Clue: Electronic stuff working for imitator (6)
Answer: EPIGON
Explanation: Electronic stuff working for imitator (6)
A charade of E (prefix for 'electronic') plus PIG ('stuff', overeat) plus ON ('working'). My first thought was EDISON, which fits, and involves DIS, which could possibly be 'stuff' as disparage, with a definition coming down resolutely in the Tesla/Edison debate; however, this putative meaning of 'stuff' hardly holds water, and the correct definition is, to say the least, less controversial. Also, the PIG is required for the theme.