I like marth, ike and zelda.
Marth has absolutly nuts swords, capable of easy 20% damage hits with huge range. Also if you hit them right (sword tip at right angle), you can exert extreem force capable of sending even low damage opponents critically off the edge allowing for a KO shot from an item. On top of that his final smash it totally rigged if you time yourself right, instantly killing any character at nearly any state in most stage areas from 0%.
Ike, is near the opposite of marth. Whereby marth was speed with medium power, this guy is power with medium speed. Ikes power is extreem, and arguably one of the hardest hitters in the game with moves matching or beasting any of the top hitters. He also inherits marth's sword mechanics so if you hit correctly you can send enemies flying critically. Ike may be slow if used normally, but he has an array of rapid fire combos and ranged attacks to pull off. Yes it can be hard to hit, but his hits hurt, easilly capable of killing characters as low as 40% if they do not look out with just 1 hit. On top of that his volcano attack makes for cheap edge kills and can OHKO atleast 3 character types in normal rules while they are at 0% thus why I like him.
Zelda, although looking like a girl is totally overflowing with power. Her attacks deal high damage and are easy to chain. Upwards smash can instantly 30%+ most characters for chains of 3 hits. Her sidewards is annoying due to damage overtime with stun. Her din's fire can also piss of recoverers dealing huge or fatal damage to them while they are struggling to make it back. To top all of this she has an array of force moves to kill stuff, with walk attacks which are nuts. Also her kicks are deadly, one lightning kick on you and you will mostlikly be dead if 40%+ near the screen edge. Her final smash also rules, as it is near instant cast and stunlock enemies while the angle allows for light characters to be killed in small stages while at 0%. Finally she has the most rigged bug of all, the giga zelda bug allowing permant XXL form which can kill all characters in 3 secs from 0% but is very rare and hard to pull off. Sadly shiek sucks, as shieks range is low, control is hard and clumbsy and she is light. Shiek can not kill shit basically due to nearly no force and hard to contact hits. Also shiek lacks the major strength of zelda, the annoying range attacks so is more prone to damage.