This bug I'm posting now is similar in concept to the one that I posted earlier, however, I feel its just different enough in how it operates to warrant a separate post. It still revolves around Hood Sickles dash.
Platform: Wii U
Level: Irrelevant
Figure/Trap: Undead Trap with Hood Sickle
Bug: We all know Hood Sickles dash/teleport is very short, barely even a whole character length, however, you can extend it dramatically using a glitch. The extent to which this extends your dash is enough to clear gaps that are too big to jump. Use your dash (primary attack button), and IMMEDIATELY AFTWARDS swap to your skylander. If done right, you will see Hood Sickle dash a much larger distance than usually does before the skylander swaps in, and the skylander will spawn in where the dash stopped, or slightly behind it on the dash path. Alternatively, you can flip a switch, instead of tagging out to get the same result.
The distance you go seems to depend on where you're standing, and the frame you tag out on. I have yet to succeed in using it to clip through stuff, but it can clear gaps too large to jump as stated before.
http://youtu.be/KuTuuoB32D4 - glitch in action (don't watch if you're worried about spoilers, I took this clip while doing a Chapter 18 run)
http://youtu.be/kfSaaLOyNBU - Using the glitch to enter the Chapter 8 Magic Gate, which is impossible without the dash extension
Edit: I can use this glitch to skip Smoke Scream entirely when using it from just the right spot.
Edit2: This glitch can be used to get into the magic gate on chapter 8.