Board Thread:Sly Cooper series discussion/@comment-24361211-20131231065523/@comment-24311006-20140109032244

In the OOU perspective: The reason why Slytankhamen's name is such is probably because Sucker Punch decided to make the Egyptian ancestor's name based on a famous Egyptian figure, Tutankhamen (used this variation of the name), and just replaced the "Tut" with "Sly". Simple as that.

As for the IU perspective: Why his name is Slytankhamen is not known at all, but Sanzaru for all we know might decide to use the similarity between his and Sly's names to do some of the things you guys have mentioned above.