In the Goddess of Victory, Delta, as an SR quality Nikke in the reconnaissance unit, has a unique and important role. She is clearly classified as a defensive character, wielding a powerful sniper rifle. The skills of Delta, the new hope of the Goddess of Victory, are quite important. She also bears the critical mission of scouting for ground threats and often takes on the most challenging tasks, leading from the front.

Delta demonstrates exceptional capabilities in communication, search, and vigilance. With her keen insight and excellent communication skills, she can promptly and accurately relay enemy information to her allies, providing crucial intelligence support for the team's actions. Her sniper rifle, with its ultra-long range, allows Delta to engage distant enemies on the battlefield. Additionally, she can target specific parts of the enemy, causing significant damage.
From the specific weapon data, this sniper rifle has a maximum capacity of 6 rounds. Although the ammunition capacity is relatively limited, each bullet carries immense power. The reload time is only 1.5 seconds, allowing her to quickly replenish her ammunition and re-engage in combat during intense battles. The operation type is charge-based, requiring a certain amount of charging time, which is 1 second. Once fully charged, the damage she can inflict reaches 250% of the base value, with the basic damage equivalent to 65% of her attack power. This damage output capability is quite impressive for a defensive character.

As a defensive character, Delta plays an indispensable role in protecting allies and enhancing the overall survival of the team. Retrogression, one of Delta's passive skills, plays a unique and critical role in battle. When Delta performs a fully charged attack and hits the target, this skill is triggered, increasing her own defense by 8%, and this effect lasts for 10 seconds. During these 10 seconds, Delta can absorb more damage for the team when facing enemy attacks.
The Last Memory is another important passive skill of Delta. It is activated when using the Burst skill, instantly increasing her defense by 51%, and this powerful defense boost lasts for 20 seconds. During these 20 seconds, Delta becomes almost an invincible defensive character on the battlefield. Forget Me Not is a Burst skill that requires manual activation, with a cooldown of 40 seconds. Once activated, it triggers a series of powerful effects.

First, the Decoy effect generates a clone with 91% of the user's maximum health, lasting for 10 seconds. This clone acts as a target to attract enemy fire, effectively diverting their attention. At the same time, the Spotlight effect taunts all enemies for 10 seconds, drawing their focus to Delta and protecting her teammates. Based on Delta's skill effects, we can form a powerful lineup that reduces the cooldown time of Burst skills.
In this lineup, Rita in the first position and Dora in the second position play crucial support roles. The combination of Rita and Dora's skills can effectively reduce the cooldown time of Delta's Burst skill, allowing her to use Forget Me Not more frequently and provide more benefits and protection to the team. The choice of the third position, an offensive role, is critical. High-damage dealers like Harlan, Red Lotus, and Isabella are ideal choices, as they have strong offensive capabilities and can deal significant damage under Delta's protection and support. Rabi is also a good alternative, as her skill set can complement Delta and the rest of the team well.

Now everyone knows how to use Delta's skills, the new hope of the Goddess of Victory. However, it's important to note that Bessie's skill set has a bug that prevents a continuous stacking of passive effects, so it's not recommended to include Bessie in this lineup. Better combat performance will depend on how you team up Delta.