Seras Victoria's hair color is orange in the first 3 episodes. Yet, as the series progresses, it fluctuates between orange and light yellow.
"Sir" is an honorific for men, formally if they have a British knighthood or if they are a baronet. Sir Integra Wingates Hellsing should be a Dame Integra Wingates Hellsing if she had a knighthood or Lady Integra Wingates Hellsing if she is a baroness, viscountess, countess, or marchioness.