1. A bottle, 6 liters in capacity. 2. A beer which is stronger than the typical base style. I have most often seen it described as 20 gravity points higher than the BJCP style guidelines. 3. A pint glass of 20 ounces.
Imperial was the second story arc from Grant Morrison's run on the Marvel Comics title New X-Men, running from issues #118-126. It further explored the origin behind the character Cassandra Nova as well as giving more depth to the student body at the Xavier Institute, specifically the Stepford Cuckoos, Beak and Angel Salvadore.