I'd remove the magnet before PKT. If you want suggestions, Ness' only move cannon to earthbound is PK flash and Bat/yoyos. PKT PSIMag and PKFire were moves used by Paula. Ness however did have a Pk Shield Move and Pk Rockin. Just some suggestions
PK Shield absorbed physical damage, i.e. what a shield would do. So maybe make the Shield give superarmor, so he can absorb(but still take damage) the knockback of a move and counterattack on an opponents lag. Kind of counter-esque animation, but he can attack out of it. Almost make it function like oli's whistle, but with way more time to attack out of it.
PK Rocking either Instantly killed or put a random effect on the opponent like, excessive vommiting, uncontrolable laughter, crying. Maybe a M2 >B type hitbox in front of him and if it hits someone, a random effect is implemented, like sleeping, or dazed, or pitfalled, or frozen, or ZSS stun etc.