Junk food. Soft furniture. Movies about space being awful. These things will summon Grif, no pentagram or latin chanting required. One second there's a perfectly empty alien chair, the next he's sprawled as obnoxiously as possible across it, halfway through a slice of pizza with another waiting in his free hand.

Did he say hello? No. Did he ask? Definitely not. Speed powers, man.

If anyone approaches he arches his eyebrows in greeting, chews mightily for a second, then offers a muffled (and crumb-infused) "Sup?"