Missing: 'Left Guy' from Silhouette Lounge's iconic sign in Allston

No one should drink alone. But "Left Guy," one of two silhouetted figures on the Silhouette Cocktail Lounge's sign, is currently MIA, leaving his bud, "Right Guy," quite lonely.

The nearly 60-year-old Allston watering hole — maybe best known for its deal offering free hot dogs for life to anyone who gets a tattoo designed around the bar's sticker — issued a news release earlier this week, saying the left silhouetted figure toasting drinks with his pal on its iconic black-and-white sign had disappeared “without a trace.”

“To the person who keeps stealing pieces off our sign — it better look real friggen cool wherever you put it... like REAL COOL,” the Silhouette posted on its Instagram page on Aug. 2.

The Instagram post's hashtag indicates there will be a reward — "no questions asked" — for anyone who finds "Left Guy" and returns him to his Allston home, ideally unharmed. According to Boston.com, the hero will be paid out with a $100 gift card. (Now that's a lot of Sil Dogs!)

If you know anything about the whereabouts of "Left Guy," the bar asks that you please shoot them a DM on Instagram.