Best GHB character?

Arvis is certainly a strong contender, given the fact that he is the PloyBoy (Able to run his mini-res ploy, attack ploy in seal and Speed/Def Ploy), but I hear Valter isn't bad. 90% sure you want to dack Berkut for his smexy lance, but I'm not certain.

Arvis. He brings the most utility with the most clear skills to use. Sure Camus is great but calvary teams are old and counter-able, Valter is pretty good but blue fliers are far too common, Legion is now outclassed even more by Raven, the list goes on.

Red tanks are hard to come by nowadays but i think zephiel is a solid pick with his beefy defense stat and masive HP pool. He’s a master of panic ploy and his stat spread isn’t half bad. Not to mention his map is easy to clear so picking him up shouldn’t be too hard.

Arvis and Valter are definitively worthy. With GHB Saias coming, Arvis most used build with spd ploy will be budget, and Valter can be budget or expensive to build, but he does wonderfull in both setup (i'm waiting so hard for his weapon refine).
Camus is not bad for a DC blue horse tank
Zelgius is a good red tank although he is quite expensive to build (DC in A is almost mandatory)
Berkut is only here for his lance
Clarisse and Legion.... Meh

As well as the above I'd say Xander and Camus are worth it as they're the only distant counter weapons on cavalry. Both are pretty good units as they stand with Xander being my most used GHB unit as a key part of Horse Emblem.

Legion is the strongest GHB unit.

Definitely Arvis, Valter and Camus out of this batch. Zephiel isn't bad either, but I've rarely used mine since BK was introduced.