Might he ride like an angel from Hell? (5)

I believe the answer is:

biker

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'ride like an angel from hell?' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'might he' is the wordplay.
'might' becomes 'bi' (I can't explain this - if you can you should believe this answer much more).
'he' becomes 'Ker'.
'bi'+'ker'='BIKER'

Can you help me to learn more?

(Other definitions for biker that I've seen before include "Motorcycist" , "Rider" , "Hell's Angel?" , "Motorcyclist" .)

I've seen this clue in the Evening Standard.

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