Jack and Jill are characters owned by Rohan Narang and make a cameo in Indie Pogo. They come from their namesake game Jack N' Jill.
"Jack & Jill are a match made in 8-bit heaven. If ever the pair becomes separated, it's their mission to reunite at all costs, despite what perils may be between them. They tend to be a bit single-minded, often electing to do only one action at a time." ― Jack N' Jill's Trophy Description.
Jack and Jill are two characters that want to be with each other no matter what. They come from the game Jack N' Jill where Jack, controlled by the player, must run and jump through 2D, retro levels to reach Jill at the end of each stage.