Mark and Nepis

Mark (マーク,) and Nepis (ネピス,) were two minor characters appearing in the first volume of the Hellsing manga, and also the first installment of the OVA.

They are one of the many children Father Anderson adopted and brought to his orphanage, Ferdinant Lukes. Mark and Nepis were voiced by Seika Kumagai and Yuko Suzuki in Japanese, and Sterling Beaumon and Jessica D. Stone respectively.

Appearance
Appearance wise, Nepis has a light colored hair, while Mark has a dark-colored hair. Both however, wore the same clothing which includes a white long-sleeved short and a matching white trousers and shoes. Fairly young, they're about 4 - 7 year old in the manga, and 2 - 4 year old in the OVA as they appear much shorter there.

History
A fight break out between a two which brought Father Anderson to them. Still mad, Nepis first blames Mark for causing the fight because he hit him, while Mark insists that Nepis stole his book first. Angered, Nepis turns around shouting at Mark, to which, Anderson then forces the two to stop the fight by shouting. Utterly shocked, Mark and Nepis both turns around and stares at the disappointed Anderson, whom tells them that fighting with their own friends is terrible and states that they'll never go to heaven that way. Scared, Mark and Nepis begs for forgiveness as they both sweats in response.

Smirking, Anderson tells them that the only ones they should fight are demons and heathens. However, the scolding stops after Anderson sees Father Renaldo in the distance. Seeing him, Anderson then orders the boys to get back to their rooms, to which, Mark and Nepis complies and both soon plays with each other right after.

Trivia

 * Nepis wasn't named in the OVA, and was instead credited as "Orphanage Children" in the ending credits, while Mark retains his name and is credited as such in the ending credits.
 * In addition, their appearance differs from the manga. In the manga, Nepis and Mark wore clean attires which includes a white long-sleeved shirt. In the OVA however, Mark and Nepis wore different clothing. Their lines were also cut short.