Got this Idea while playing Udertale
Basicaly a xover with Undertale
It can be:
1:Marco has the magical abilities of any character(your choice) and how he got it(he founf the soul of that character,reincarnation in other words also your choice)
2:Marco IS the child that fell In Undertale
3:Undertale is another dimension
4:Marco is from Undertale or
5:Undertale Is happening in Marco's world
PM me if you plan to take this challenge(sorry for grammar,I'm Brazilian)