The hepatitis A vaccine, the rubella portion of the MMR vaccine, the chicken pox vaccine, and the shingles vaccine all contain viruses (weakened or inactivated) that were grown in human cells. A virus must be given a medium in which to propagate.
Chara (typically /ËkÃ¦.É¹Ê/ or /ËtÊÉË.É¹Ê/), also known as the First Human or the Fallen Human, is the first human to fall into the Underground. This is the human that the player names at the start of the game, and not the controllable character who is played throughout the entirety of Undertale.
Chara in Underfell is the first fallen child and is the tritagonist of the Underfell universe. One fanmade depiction of Underfell Chara shows them acting opposite of how they do in Undertale. They appear at the end of a Pacifist run instead of a Genocide run, where they credit the player for sparing all the monsters despite the monsters trying to kill the player first.