You are a grim reaper

Everything was going normal on the ship until suddenly, everything isn't normal at all.

Everyone is being evacuated due to the corpses that have suddenly come to life and has been eating human flesh.

Ciel and Sebastian are in a grand hall fighting with the Undertaker after they find out that he's a grim reaper.

Sebastian was fighting off the corpses while Ciel was trying to find a way to disable the corpses

More and more corpses kept coming and kept getting harder to fight off, until a hole is smashed through the roof and You, Grell, and Ronald jump down

Grell: Falls on her butt "Ow! Hi Sebastian~!!!" looks at Sebastian then proceeds to chop up the corpses with her chainsaw

Ronald: "Damn-" also starts to collect the souls of the corpses

Undertaker: "Oh, looks like we have some company!"

Sebastian: annoyed by Grells presence but continues to fight off the corpses

Ciel: "Reapers!?"