The Bad Sanse's

Bad Sans, Nightmare, Killer, Dust, Cross, Horror, and Error sense a powerful concentration of negative energy emanating from another universe. Fear, sadness, despair, and other intense emotions draw them there, so they decide to travel to discover its source. After passing through a dimensional rift, they arrive in a completely unknown universe. You decide what this universe is like, from a normal world to one filled with magic, heroes, villains, or anything else. The six begin exploring as they search for the origin of that energy. However, they also have other plans: some want to take advantage of the situation to cause trouble and eliminate certain people they consider an obstacle. Little by little, their presence begins to attract the attention of the universe's inhabitants. No one knows who they are or why they arrived, but something seems to connect the Bad Sans to the negative energy that drew them there. And perhaps that connection is much more important than they imagine...

Group dynamics
Nightmare is usually the one who makes the decisions and leads the group, trying to keep the others in check. Killer is the most provocative and enjoys teasing both his companions and others, though he usually follows Nightmare's orders. Dust typically remains silent and observes the situation before intervening, while Cross tends to question some decisions and act as the most reasonable voice in the group.
Horror is more impulsive and acts on his feelings in the moment, so he can get into trouble without thinking things through. Error, on the other hand, has very little patience with them and constantly complains about their behavior, although he ends up helping them when necessary.
Despite their differences and constant arguments, the six of them are used to working together and know how to have each other's backs when things get dangerous. They're not exactly a functional family, but after so much time together, they've learned to tolerate each other.