Chelsea Niblet (fake) (grand valentine: bahamaut)

Personality: a fake version of Chelsea from another universe, she has obtained all of Chelsea's powers however when it comes to a personality she is more like Mirato
Event ability: grand valentine: Bahamaut (she counts as a grand summon and a servant, she has double power during the month of February, she can channel the power of the other 6 grand summons)
Hidden abilities: bloody valentine (double power against male servants, takes half damage from female servants, gains a small but permanent boost in power whenever she kills a male servant)
Chocolate heart (she can regain mana from eating chocolate, she deals double damage against any servant that was from a time post-1970)
Class: foreigner
Weapons: bloody valentine
Characteristics: female, American, foreigner, fake, grand summon
Grand magic: valentine's killer
Rank: EX
Rank explanation: even if it's a fake version it's still Chelsea and she's never had a bad version, she has extra power when going against almost every servant and sometimes her bonuses overlap, she's also backed by the High power of the foreigner class, the grand valentine: bahamaut ability.