(I have Scarlet, not Crimson, but...)

Which of your main's attacks interrupt? Use that. It's... really good.
Unless you have another earth type on your team that's worth it, I'd avoid "Enhancement of Earth Types". Jirobo has the same thing, though, and I'm pretty sure they stack - actually, yeah, they should.

Hinata combos with almost everybody and she interrupts too.
Kakashi combos well too but he dies really fast.
Chiyo is good when I've fought her. Her mystery made me lose in the arena once.
Lee/Gai's leech is really useful and sometimes with one of them you don't need an actual medic. I'd use one anyway, though.
Speaking of medics, I suggest Kabuto since he's great, but you don't have him... try Karin; I know she has a Sasuke/lightning main combo that's pretty lethal. Her I think you just have to get right.
Gaara is a really good tank but he doesn't combo at all.
Tobi's a good troller since people don't really know how to attack him but they want to wipe him out (it's taijutsu, not mystery).

Honestly I'd go Jirobo/Choji/Chiyo but I don't know how that'd work exactly.

Hope this helps!

my main is a Lv. 48 +3 Awakened Crimson Fist and I have Karin, Sasuke, and Kurenai (all also Lv 48 and +3 Awakened) and they can do some damage together since they c*l combo with each other. My main is in the middle with Sasuke behind him and Karin on the top middle with Kurenai behind her. Is that a good formation or should I switch out because they are my most powerful ninjas with my power maxing out at 5864 or somewhere around that and I cultivate and strengthen them as much as power and upgrading their materials (my main has the only Jonin level equipment (Jonin Vest)) This post was last edited by 107***@facebook at 2016-9-3 03:05

i use (lvl 61. No2 Earth on server)
X-X-X
Tobi-Kakashi-Main
Kankuro-X-X
Skill:
Stone fist
taijutsu
lotus
bottom force
steelbody

for summon the best is snake option (knockdown -> high flow)

Good luck :)