A YouTube user who has been on YouTube since late August of 2008. He makes a series on YouTube that is known as "Xer and Co." He's made his presence known on several internet forums, and has become a global moderator of the Smashtasm Forum. ShadowXer has also been nicknamed Crawsah.
JF: "Hey look, its ShadowXer."
ShadowXer: "Disregard JF, he sucks cocks."
JF: "no u"