Hellsing: Ultimate IV

 Hellsing: Ultimate OVA IV 'is the fourth installment of the Hellsing OVA (Original Video Animation) series. It was originally released in Japan on February 22, 2008 and released in English on September 23, 2008 by Funimation Entertainment, under the licensing of Geneon USA.'

Plot Synopsis
As Hellsing and Iscariot hold a meeting with the Queen of the United Kingdom their conference is interrupted by a message from The Major (via live video transmission brought in by the ubiquitous Schrödinger) citing his intention to wage war on England. Meanwhile, a VTOL aircraft carrier called the Eagle gets hijacked by Millennium. Integra decides to send Alucard to deal with the perpetrators and their leader, Rip van Winkle. Meanwhile the Major and his minions make their way toward London to drive England into another war.

Characters (In Order of Appearance)

 * The Major
 * The Captain
 * The Doctor
 * Enrico Maxwell
 * Pip Bernadotte
 * Seras Victoria
 * Integra Hellsing
 * Alucard
 * Zorin Blitz
 * Rip van Winkle (Silhouette)
 * Schrödinger (Silhouette)
 * Walter C. Dornez (Silhouette)
 * Alexander Anderson
 * Heinkel Wolfe
 * Sir Shelby M. Penwood
 * Sir Hugh Islands
 * Renaldo
 * The Queen

Trivia

 * Out of the entire Hellsing: Ultimate OVA series, Hellsing: Ultimate OVA IV covers the highest amount of manga chapters.