I think Yunaka (or maybe other) as Thief is incredible to dodge enemies. Combines with a wepon das gives you avoid and maybe a ability from marth that gives you avoid combines with Lyns ability to increase speed when killing a enemy is so strong that you aren’t being able to hit anymore. Sadly not good on madening because enemies just ignore you, but you could change your avoid with different weapons or the area you are on.

My Ivy with Tiki was able to tank a army of incomding enemies. The Wait heal, better level ups from Tiki help probably every class, but as a magic use, Ivy is able to counter every enemy and Ivy has the advantage to is decently bulky.