Looking for Bank FX Broker/Dealer who is MT4 or MT5 compatible

Have you checked out Swissquote, Pipologist?

UOBKayHian Singapore, subsidary of UOB, one of the bigger banks in Asia. But you are still only going to get a leverage of 50 per Singapore regulation.
Search UtradeFX
I don't know why you want it tied to a bank though, but hey what do I care