Thunderbolts #28
"Castles in the Air"
July 1999, in collection
The T-Bolts attack Graviton, who has declared himself monarch of his Sky Island
reprinted in
*
Marvel Digital Comics
no date
(no date)
"Castles in the Air"
July 1999, in collection
The T-Bolts attack Graviton, who has declared himself monarch of his Sky Island