I agree with Ron Random.
If it's boss tunes you're after, get inspiration from late 80s boss tunes from the old Capcom Megaman games.
The boss tunes from Megaman 1, 2 and 3 are very catchy.
Look them up on YouTube and try to remake them by ear, that would be a good learning process so you can figure out the chords and notes.
Boss tunes from old 8-bit NES games are made to be catchy.
They are so good because you have to be willing to listen to these 40 second loops over and over again.