My real name is Michael, when I got my most recent job 9 years ago, everyone there eventually ended up calling me Mikey. When I got my first e-mail account, I tried Mikey, but they were taken, I would have been stuck with Mikey47658340934875@hotmail.com
(not a real e-mail addy). So, Mykee was available. For those of you who were taught phonetically, Mykee ( My-key) is as close the Mikey as you can get. It stuck.