I just noticed something...was it intentional?

[Roland Itiative]

Ominous hooded figures are quite a common way for evil people to dress (being a variation of the MitD's "cloak in darkness until the proper moment to reveal yourself", allowing one to walk around without revealing themselves or using a pink Hello Kitty parasol), it's not really enough to make a connection. As for there being three, it's both a very meaningful, "mystical" number, and the number of evil alignments and fiend races in D&D, so it was not really a choice on the Giant's part, he was just using what he had.