What if THEY had a DELTARUNE Secret Boss theme...?

What if Porky Minch had a DELTARUNE Secret Boss Theme? | FRIEND OR FOE (Earthbound x DELTARUNE)

What if Red & Blue had a DELTARUNE Secret Boss Theme? | ABOVE IT ALL (Pokémon x Deltarune)

What if Metal Sonic had a DELTARUNE Secret Boss Theme? | FORGED IN BLUE (Sonic x Deltarune)

What if Ben 10 had a DELTARUNE Secret Boss Theme? | THE COST OF TEN (Ben 10 x Deltarune)