Sonic and Kirby - Points where you shouldn't hit them

There are 2 techniques I know of where ones a kirby glitch and 1s a sonic move.

The sonic one works where if you use his b-up. And then as you get closer to the spring you dair like crazy. This leads him to be stuck in a loop of dair and spring up but he doesn't spring far if at all so if anyone touches you they get hurt - though ranged moves and some moves like diddys forward special plus a do get through

ANOTHER - the kirby one

If you are on PictoChat and you get on the slanted edge and you b-down. You get stuck in a loop of falling off but going back up so you kinda shake and quake a bit. Anyone that touches you gets hurt from what I've seen - very efficient in 2 v2. - You will eventually transform back to regular kirby ey