General

Fire Poison is slow the first two jobs, but I have enjoyed it's third.

Buccaneers for uniqueness, no/low mp pots, and kaio ken (DBZ reference).

Kanna for special attacks and kishin. (kishin and most summons are broken atm after recent patch).

Corsair for a gunning spree. Shoot away.

Heard Cannoneers are fun as well, but haven't got back to mine.

Phantom to steal adventurer skills and easily get into a RnJ pq.

Bishop for support, but it is possible to boss with it. You may just have to make a Mihile for the stance effect link skill.

Any of the 3 resistance if you want to see their new revamp.

Demon Avengers for tanking hits. Just be aware that you end up spamming one move and have to refresh every so often to prevent your hp to go down.

Dark Knight if you like spinning for 8 seconds and bossing. They regen health when attacking and have 1 free death.

Thunder Breakers for mobbing, but not great for bossing.

Would list more but I'm going on memory for the other jobs I played.

Buccaneers are a chore to train until 4th job.

Try a cygnus knight for fun/no mastery books..

I'll give you what I think is and what has a variety of skills.

Buccaneer, Hayato, Demon Slayer, Demon Avenger, Fire Poison AM, Phantom, Arans, Zero, Dawn Warrior, Dual Bladers, Thunder Breakers, Battle Mages, Mercedes, Corsairs.

A lot of them might not have variety of skills but IMO they are worth looking into.

Fun is entirely opinion. We can't tell you what's fun and assume you'll agree. If you're just playing for fun, any character will do just fine. Just take a look at them all and pick the one you think you'll have the most fun with.

what @MarioLuigi52 said. Not heavy hitters but I personally like them.

i just want something fun and something that does decent damage. Im not planning on hitting high numbers, just going 2 play 4 fun.

Bucaneer's

Depends on what you are looking for. What are you looking for in a job?