The collaboration between Arknights and Delicious in Dungeon introduces two unique operators, Laios and Marcille, adding depth and excitement to the strategy gacha game. Understanding their skills, playstyles, and deployment strategies can significantly enhance your gameplay experience.
Both characters are exclusive to the Crossover Limited Headhunting banner, requiring players to navigate the gacha system to unlock them. Once obtained, maximizing their potential is crucial, and this guide is here to help you do just that.
Laios: The Curious and Calculated Frontliner
Laios, a 5-star melee unit from the Dreadnought Guard branch, stands out with his strong, single-target offense. His unique kit rewards strategic placement and understanding of enemy types, making him perfect for players who enjoy planning and tactical gameplay. Unlike a unit you can deploy without thought, Laios thrives when used with precision and foresight.

Skills and Combat Use
At Elite 2, Laios unlocks Reliable Companion, which provides 25 initial mana and a powerful team-wide buff when your squad includes four or more Laios’s Party members. This talent boosts ASPD and DEF, enhancing both offense and survivability for the entire group.
Marcille: The Versatile Mage
Marcille, another 5-star unit, offers versatility with her three distinct skills, each focusing on mana management and strategic deployment. Her gameplay revolves around timing and planning, making her a valuable asset in various combat scenarios.
Skills and Combat Use
A Top Student’s Abilities: A burst skill that enhances Marcille’s attack using mana. If no enemies are nearby, it shifts to healing allies, making it ideal for mixed-role usage.
Summon Familiar: Creates a companion that boosts her basic attacks with slow effects. Re-activating it enhances the familiar, increasing her range and adding a stun per hit, perfect for crowd control and stalling tactics.
Explosion Magic: A high-mana skill that, after chanting, unleashes a massive AoE explosion with a stun effect. With continued chanting and additional mana, it becomes a multi-hit attack, ideal for clearing groups of enemies in high-pressure stages.
Marcille’s gameplay loop involves deploying her at crucial moments, using her skills, and then retreating to build mana. This cycle rewards strategic timing, especially when paired with SP-focused supports or delay tactics.
Building and Synergy
Marcille truly shines at Elite 2, where her second talent not only provides more starting mana but also adds substantial team-wide buffs for crossover-themed squads. For skill upgrades, Summon Familiar offers flexibility and effectiveness across various stages, while Explosion Magic is ideal for high-burst scenarios.
Recommended Development Path:
- Promotion Priority: Elite 2 for mana scaling and support synergy
- Skill Upgrade Focus: Summon Familiar for utility; Explosion Magic for burst
- Best Potentials: ATK increase and redeployment time reduction
Marcille synergizes well with operators who can protect her during chants or indirectly boost her SP. She pairs excellently with Laios and other Laios’s Party units to leverage the team buff, and also fits into caster-focused compositions needing both damage and control.
Laios and Marcille bring a fresh and quirky flavor to Arknights, offering rewarding gameplay that challenges players to think strategically. Laios rewards precision and tactical placement, while Marcille demands careful mana management for explosive results. Together, they form a versatile core capable of tackling both single-target and AoE challenges.
For those looking to experiment with new team builds, especially those centered around the Laios’s Party tag, both units offer strong synergy potential. To ensure the smoothest gameplay experience, particularly during intense missions, consider playing Arknights on PC with BlueStacks for better controls, larger visuals, and uninterrupted gameplay.