General PvE: Here goes the start of the game and your journey! These are the early stages and teams that I used to get through things!
Now know this; there are several teams that you c*e to get through early game content. Of course, some will just be better than others. Also, to reiterate, I play Breeze Dancer. Therefore the exact teams I list will best operate for her. However, after reading all the lead characters skills, I have found that most of them have similar kits, in terms of combo potential, apart from the high combo she provides.
What I have done, and something that many others already know, is that focusing on Team 7 (Naruto, Sasuke and Sakura) is arguably the best early game option out there. They are phenomenal for two big reasons...Scaling and team composition: They literally do everything you could ask for at just 2*, with Naruto and Sasuke becoming tremendously stronger at 3*. Naruto can provide front line stall with clones and, at 2* and above, has line damage with rasengan. Sasuke has several chase abilities for all different types of skills and, at 3*, can buff other lightning ninja. Sakura is nice because many ninja have a knockdown she can combo off of. She also heals every turn, up to twice passively and one big team heal, all while doing damage. Also, being designed as the first accessible team to the player, they also combo with every lead character fairly well. They are altogether a win-win team.
Along with the ever amazing Team 7 there are quite a few other notable characters to take advantage of for the general story of the game.
Here you can clearly see the ninja I chose, but I will also list those I think can be helpful below.
Going with the F2P/More likely characters first...
Hinata: Not usable at 1* (trust me) but upon reaching 2* she becomes a force to be reckoned with. As a frontline she can pull aggro (taunt) to herself with her mystery skill while also greatly improving evasion. If the opponent doesn't use a mystery she effectively turns it into a 0 damage round for them. She also has a chase that allows her to block chakra. This means that, given the right cir*stances, you can forcibly chakra block some big skills, such as team heals or disables. The easiest way is a mystery skill that has repulse in it, to ensure your target.
Neji: Similar to Hinata. He buffs his own evasion by 20% permanently and does so even more round one. He also becomes the only target of standard attacks in that first turn. The upside is he doesn't use the 20 chakra Hinata does to do so but the downside is its only the first turn he taunts. He does, instead, have the option of instantly sealing an opponents chakra and, as a frontline, he will have priority. A good alternative for more aggressive comps or those that lack a targeted repulse skill, such as Naruto's rasengan, to pick their chakra plugged targets.
Shikamaru: Although not a frontliner. Shikamaru is worth noting here due to his sheer lockdown potential. If he is on a team with a character who can cause knockdown he is able to effectively disable two enemy ninja. One with his knockdown combo and one with his mystery. That means two enemies will be completely stunned and take no action. If your team lacks repulse for someone like Hinata but has knockdowns he is an excellent alternative.
The following ninja are also noted because of a few specific scenarios...
Kankuro: With use of his puppet first turn can create a pseudo-tank. With puppet out he also hits fairly hard, has a nice hit count, low float and poisons at the end. Can be useful for scenarios such as fights with large summons, the Gaara-Shukaku mission and Kyuubi event.
Temari: Temari is listed because she provides the much needed repulse mystery ability to go with the likes of Hinata while also offering some decent damage and float combo setup. The big downfall here though is that there are other better damage dealers that combo with floats and other skills, such as Sasuke.
Lee: With his self sustained leech ability, large combos and 2 attack per turn on mystery activation. Lee can dish out some insane damage and keep himself in a fight much longer than you'd expect. His biggest issue is that he's entirely single target and standard attacks always hit right in front of him. He can be immensely useful in situations similar to Kankuro but, in that case, Kankuro is usually a bit safer.
Kiba: With a clone, a repulse mystery and chance knockdown, Kiba has a few things going for him. He survives a bit longer than one would think while dishing out a nice amount of damage. His 2* form adds a very nice high combo chase that lets him randomly hit 3 enemies and turns his mystery into full team damage with Akamaru out, allowing for some very high aoe (area of effect a.k.a multi-target) damage. The big thing here is that you will be sacrificing quite a bit of utility and frontline to use him. Plus his spot in the future with the likes of 3* Sasuke's massive aoe burst warrants a bit of hesitation on powering him up early.
Now we will discuss the rarer, more exclusive luxury ninja that you may come across...
Gaara: Powerful early game. Buffs all other wind ninja, immune to combos, aoe mystery and self shield. Gaara has all the things you'd want early...if you pay. He can easily withstand a turn or two as frontline without taking damage due to shield and can dish out a lot of damage with skills. The only issue is he tends to fall off fairly quickly as the game progresses. He might live but his allies tend to die around him before he makes any large impact.
Nine-Tail Naruto: Obvious con is the huge cost that goes along with this ninja. His pros are very obvious though. Extremely strong mystery scaling, ignites foes on contact, self heal and buff on taking damage. He is a very scary threat if he has allies to work with him. Keep him alive and he just gets stronger as the fight goes whilst you burn to death. He too falls off a bit but many people say if you manage to 3*+ him he's insane.
Shizune: I got her early and thought she would be great...I was fairly wrong. She isn't a horrible character at all but the fact she doesn't do damage with her standard hurts. Her poison is nice but compared to say, Karin, its not that great. She has some uses with knockdown>high float combos and does heal but Sakura/Karin tend to be much better.
Karin: (See above) Karin is a great backline support. She heals, combos, aoe poisons and is generally just a nice addition. Aoe poison in a chase is very powerful as she can quickly stack poison effects and demolish her opponents. Pair that with the fact that she steadily heals her own teammates and you have a pretty pesky backliner.
Kakashi: Kakashi is an early game combo powerhouse. 2*Sasuke