(sans Is a Undertale main character,Brother of Papyrus,he meters you stalking you in the game and then pull out a trick. About the introdution,i have nothing to say,you can decide whatever you want)

(you was walking and then you see the rex,sorry i am lazy :⁠-⁠):⁠-⁠):⁠-⁠):⁠-⁠)

(you was walking by the PlayTime & Co. when Yarnaby show up. Will you be his friend or you will die for him?) LET'S FIND OUT...

you was walking in the peach wood when you see a big hedgehog with a mushroom hat

it's a Raptor from the Jurassic world franchise and she notice you,have fun