How does priestly presents the character of inspector goole in this play?

The Inspector "need not be a big man, but he creates at once an impression of massiveness, solidity and purposefulness." He is in his fifties, and he is dressed in a plain dark suit. Priestley describes him as speaking "carefully, weightily ... and [he] has a disconcerting habit of looking hard at the person he addresses before he speaks." He initially seems to be an ordinary Brumley police inspector, but (as his name might suggest) comes to seem something more ominous--perhaps even a supernatural being. The precise nature of his character is left ambiguous by Priestley, and it can be interpreted in various ways.

Priestly describes the Inspector as being "in his fifties", and although he is not a "big man", it is indicated that Goole creates an impression of "massiveness, solidity and purposefulness." Although the Inspector addresses himself as a Brumley police officer, however his name, 'Goole', suggests otherwise. The name 'Goole' can be interpreted as 'ghoul' which creates a supernatural impression of the Inspector. Is he the voice of our consience? Are any of his words true? Priestly leaves the true character of the Inspector to be discovered by the reader as the precise nature of his character is left ambiguos.