Dingo

Stacks of Bleed and Burn

Dingo's S1 causes Bleed, and his S2 causes Burn to enemies that are afflicted with Bleed. Even better, his S1 has a chance to trigger his S2. By alternating between the two, Dingo can rack up a lot of debuff stacks on his enemies, sapping away their health over time and strengthening debuff-centric heroes like Sigret.

Strong Support S3

Dingo's S3 cleanses all ailments from his allies and also reduces their skill cooldowns by 1 turn. Because a lot of strong Soul Weavers lack the ability to cleanse (Doris, Mascot Hazel, and Angelica, to name a few), having a Warrior who can handle the job instead can be very helpful. And of course, the AOE cooldown reduction is useful in literally any party setup.

Kills Reduce S3 Cooldown

Dingo's S3 has a fairly long cooldown -- 5 turns at max Skill Enhance -- but its cooldown is accelerated whenever an enemy dies. When facing bosses that summon adds, like Azimanak or Magnar of the Flame, Dingo can feed his team multiple times in the fight.

Lots of Turns, Lots of Souls

Because Dingo is naturally fast, can chain his S1 into his S2, and gets an extra turn when he uses his Awakened S3, he tends to take a LOT of actions. This also means he generates a lot of Souls for his team to use! Combine this with spam-happy Artifacts like Ranon's Memorandum, Junkyard Dog, or El's Fist and you'll really see Dingo's potential take off.

Rare Buffs

Not only is a Dual Attack Devotion Aura pretty rare, but it's especially useful for Dingo. His S1 can trigger his S2 even when used as part of a Dual Attack, so anytime an ally puts him up for a Dual Attack, you may end up getting THREE attacks for the price of one, rather than the usual two. Furthermore, his S3 has a Critical Chance buff attached to it, which is a pretty rare buff to have.

Low Direct Damage

Dingo has mediocre Atk and low damage multipliers on his skills, so his direct damage output is unimpressive. Most of his damage comes from spamming Bleeds and Burns... which also means his damage falls off sharply on enemies who cure debuffs, cause Immunity, have high Effect Resistance, or straight-up resist his ailments.

Needs Other Bleed Units

Although he can cause Bleed himself, the application chance on Dingo's S1 is actually not very high. This is bad, because Dingo needs Bleed to proc so his S2 will add Burn (his S2, thankfully, has a high chance of Burning, especially after Skill Enhancement). As such, Dingo really needs help from another hero who can cause Bleed in order to wring more Burns out of his S2.

Requires Investment

Decent gear, pretty specific Artifacts, carefully-chosen teammates, and some dedicated Molagora investment are all necessary for Dingo to do his job properly. That's a lot of investment to put into a relatively niche (albeit admittedly fun) 4★ hero.

Very Bad A.I.

This is a minor issue, but Dingo doesn't play nice with Epic Seven's auto-battle A.I., which has him use his S3 first (irrelevant at the start of a battle before allies have put their attacks on cooldown) and his S2 next (irrelevant at the start of a battle before enemies have been afflicted with Bleed). If you aren't controlling him manually, he's only going to pull his weight by sheer luck.