I take that back voice actor-wise. However, a Wolften showing up isn't a hint. It's a great item and the Wollfens have been in... more than one Smash game before, so... it doesn't mean a thing.
Oh I forgot another interesting trophy I spotted was Mecha Fiora. She boosts your attack power as you take damage
Heres the list of trophies I spotted in Rev3game's 100 facts about Smash Bros Wii U video
Wolfen it gives an opponent 100% damage at the start of the match
Flying man ( from Earthbound's Magicant, says that in video) can knock away your next enemy.
Mecha Fiora who boosts your attack power as you take damage
Resseti reduces stats to 0 for one battle.
Great Fox warps you to a checkpoint you haven't been to
POW block makes you drop fighters
Chain Chomp scatters opponents
Zinger places a trap which can launch opponents
Ashley slows down the spinner
Riki draws in nearby items as you move
Yellow Wollywog nullifies a trap you step on
Tingle shuffles around every player randomly
Baseball Daisy lets you catch every item thrown at you
Excite Bike doubles dice roll
Latios lets you select an opponent to be your teammate for the battle
Tetra places trap that can steal opponents fighter
Snorlax makes you impossible to launch
Dillon launches opponents
Fuel tank (possible item different from others) heals you 50% at the start of a battle
The interesting one is Mecha Fiora
Those are the ones I found please add to this list if you find more