Nami has a lot of AoE skills with pretty violent damage. Although she depends heavily on his skills, with the right build, she can clean up his existing opponents.

Here's my build;

Special Move Set

• Zeus Breeze Tempo
  
• Storm Cloud Rod
  
• Weather Egg
  
• Servant

Skill Set

• Indomitable Spirit
  
• Battle Instinct
  
• Concentration
  
• Special Move Enhancement

With this build, you'll have spammable skills with pretty big damage. I used two full-force burst skills to keep her sustained, fast, and strong. That's where the indomitable spirit works. Combined with concentration, Nami will really be unstoppable.

UTA
Recently, Uta was released as a playable character. She's a Technique Type, which typically relies heavily on the skills they possesses. Personally, I'm not a big fan of Technique Types because their destructive power tends to be minimal.

Speaking of Uta, this character is actually very enjoyable to play. Basic attacks with elegant dance animations, satisfying skills, and decent crowd control. The problem with Uta is that I haven't been able to find a suitable build to make her not only enjoyable to use but also effective.

SHANKS
Shanks has also re-entered the game with a new skill set that, in my opinion, is much better than the existing Shanks. Actually, I had very high expectations for Shanks when I saw him entering the Film : Red DLC. I really wanted to place Shanks' name in the SS tier, lol.
(Maybe my expectations were too high, but this version of Shanks isn't that bad!)

Transformed into a Speed Type, he boasts enhanced mobility that significantly boosts his destructive capabilities. So far, Shanks (RED) is an enjoyable character to use and is not any less fun than other playable characters of the Speed Type.

COBY
Honestly, I was quite surprised to see Coby as the third character in this DLC. Among the many characters in the Red Movie, it turned out to be Coby. (Initially, I thought it would be Kizaru, Luffy, or even Oven who would appear).

Setting that aside, as a Speed Type, Coby has a fairly unique skill set. In my opinion, there's nothing particularly special about this character, but he's not bad. Not a big fan of Coby, but, alas, he's still a good character to use.

GOL D. ROGER
The King of Pirates has finally entered the battle arena. He's one of the characters I'm really excited to play as. Even though I know that, in the end, his skill set in the game won't be much different from Shanks', except for his named techniques.

In my opinion, Roger is an upgraded version of the Power Type Shanks. He has a better hitboxes, better damage, and better combos; overall, he's much better. So far, Roger is an excellent character. However, there are a few things I don't like about him. Based on my experience playing, Roger relies too heavily on his Full-Force Burst (FFB). Of course, he's not the first character to depend on FFB, but I feel that the damage and combos he deals without FFB drop too significantly. However, you can work around this by using Resilience, Battle Instinct, FFB Enhancement, or similar abilities.

MONKEY D. GARP
The Hero of the Marines has also joined the battle arena, the second Power Type from this DLC. Honestly, I didn’t have high expectations for this old man since he was a playable character in OPPW3. I thought his skills and combos wouldn’t be much different from Garp in OPPW3. However, after playing him, I’ve become quite addicted to using this character. His skills and combos are significantly different from him in OPPW3. Thank you, developers.

Our hero, Garp, is one of the characters that can easily clear the arena. Learn his simple combos, and he becomes truly terrifying. He might also need FFB to maximize his damage output (though, to be fair, all characters need FFB), but he doesn’t rely on FFB too much, which is good. He is arguably the best character in this DLC.

RAYLEIGH
Last but not least, Rayleigh has also joined his captain in the battle arena. When this DLC was first announced, I thought Prime Whitebeard would be a playable character. But well, Rayleigh isn't a bad choice. After all, he’s never been a playable character in the OPPW series—correct me if I’m wrong.

This Speed Type character has some pretty satisfying combos, but like other speedsters, the damage output isn’t that high. Of course, that doesn’t mean he’s weak. To be honest, I haven’t fully explored this character yet, but so far, my experience playing Rayleigh isn’t much different from playing Roger.