Listen you lubbers! I want you all after that Kirby!
~ Captaing Vul ordering his minions to attack Kirby
Captain Vul is a high-ranking albatross (though he shares traits with a Sage-grouse and his name indicates that he is a vulture) that presides over the Battleship Halberd and serves as one of Meta Knight's members through the Revenge of Meta Knight course in Kirby Super Star and it's remake Kirby Super Star Ultra.
Dressed in regal, sailor captain-style clothing with epaulets, Vul regularly oversees the crew and makes sure the ship runs smoothly. But after Kirby learns of Meta Knight's plan to conquer Dream Land with it and therefore plans to destroy it, Vul becomes desperate and violently obsessed, and proves that he will do anything to eliminate Kirby—even destroy his own ship.
Captain Vul is a very underdeveloped character that serves under Meta Knight, presumably as some sort of second-in-command. However, his dialogue indicates that he shares just as much ownership of the Halberd as Meta Knight does. When Vul hears that Kirby has boarded the Halberd, he orders Heavy Lobster to crush him before he becomes any kind of nuisance. After Kirby boards the ship again, he orders the Meta-Knights to do away with him. Then, he guides Kirby to Main Cannon #2. When that doesn't work and Kirby destroys the cannon, Vul throws Heavy Lobster at him again. Kirby withstands all of Vul's plans and slowly weakens the Halberd. Beyond coming up with schemes to defeat Kirby, Captain Vul also comments alongside the other Meta-Knights on Kirby's progress, often to give his soldiers orders, scold them for whatever failures or pathetic schemes they commit, or to express his obsession with killing Kirby. After Kirby destroys the Halberd's Reactor, Vul decides he would rather live than go down with the ill-fated ship. He is the first to evacuate, and is never seen again.
In the original Kirby Super Star for SNES, his portraits were noticeably more exaggerated and cartoony than the ones in Kirby Super Star Ultra. In addition, he was not given a name until the remake. He makes a brief cameo during the end credits of Meta Knightmare Ultra, along with Sailor Waddle Dee and Ax Knight. They are seen in a brief snapshot with Meta Knight in the interior of the Halberd.
The credits of Meta Knightmare Ultra feature CG images that never appear as actual cutscenes. One of these images depicts Meta Knight standing with Sailor Waddle Dee, Ax Knight, and Captain Vul. Throughout the entire Kirby series, this is the only time Captain Vul's face is shown outside of dialog sequences.