Bonnie Guide - Best Build & Team Comps | Mongil: Star Dive

This is a build guide for Bonnie in Mongil: Star Dive. Learn about the best Monsterlings, equipment, and top team comps, along with tier rankings and how to use Bonnie.

Table of Contents

Overview & Rating
How to Play Bonnie
Best Team Comps
Best Monsterlings
Best Artifacts
Best Equipment
Trait & Skills
Awakening Priority
Profile

Bonnie Overview & Rating

	Rarity	4★
	Element	Wind
	Role	Support

Tier / Rating

Overall Tier	Reroll Tier
▶ Best Character Tier List	- ▶ Reroll Tier List

User Score

How to Play Bonnie

Wind-elemental Supporter Who Also Contributes Personal DPS

Bonnie is a Wind-elemental Supporter who contributes to the team through her own damage output. Her Supporter class trait increases the damage of her Tag-Out Skill.

Applies Wind RES Reduction for an Extended Duration

Bonnie gains "Musical Scores" stacks on every Critical Hit. Using her Tag-Out Skill with 10 or more stacks extends the attack duration, effectively increasing the Wind RES Reduction uptime, making her a great partner for Wind-elemental Attackers.

Becomes Very Powerful with Well-Invested Equipment

Despite being a Supporter, Crit Chance is an extremely important stat for Bonnie. While she can boost her own Crit Chance through her passive trait, she truly shines once her equipment is well invested.

Bonnie Best Team Comps

Bonnie Best Team Comp

Esther

Flare

Bonnie

A team comp built around the Esther and Bonnie combo. For the remaining slot, it's recommended to use a Destroyer or attacker that matches the enemy's Elemental Weakness. Bonnie boosts her own Crit Rate to deal solid DMG herself while also supporting the team.

Bonnie Best Monsterlings

Prioritize Effects That Boost Both Team and Personal DPS

Avardan

Amon

Taglock

Bonnie's recommended Monsterling prioritizes Rank Effects that boost team-wide DPS. Avardan and Amon raise the team's overall DPS, while Taglock can also provide personal enhancements.

Bonnie Best Artifacts

Rating & Reason

Artifact	Rating/Reason
Military Band's Offbeat Marcher	[Rating] ★★★★★ - Bonnie's Signature Artifact - Increases DEF - Grants a Wind DMG buff to the entire team with each Tag-out Skill attack
Celestial Halo of Life	[Rating] ★★★・・ - Greatly increases DEF - Increases Ultimate DMG - Grants an ATK buff to all team members upon landing an attack on an enemy

Prioritize Artifacts that buff the character you tag in

As a Support who backs up the character you tag in, Bonnie benefits most from Artifacts that further strengthen the team. The Signature Artifact in particular has great synergy — when the Horn performance activates, allies gain a significant Wind DMG buff as well.

Bonnie Best Equipment

Recommendation & Reason

Equipment	Recommendation / Set Effects
Abyss	[Rating] ★★★★★ 2-Set Effect: When using SP Skill, increases Wind Elemental DMG by 10% for 5 seconds. 4-Set Effect: On Critical Hit, increases Wind Elemental DMG by 10% for 5 seconds. [Why We Recommend] - Wind Elemental DMG UP to Boost DPS - Great synergy with both conditions

Bonnie Trait & Skills

Passive Trait

Fantasia

[Passive Trait]
Switching to another instrument during combat increases Bonnie's Crit Rate.
If she lands a critical hit, she can gain a Musical Score.
Crit Rate Boost: 10%
Musical Scores Gained upon Critical Hit: 1

Skills

Trumpet Part	[Skill Effects] Bonnie deals Wind DMG by blowing her Trumpet at an enemy:
	[Multipliers] 1st Hit DMG: 24% 2nd Hit DMG: 17% 2nd Hit Reverberation DMG: 1.4% 3rd Hit DMG: 32% 3rd Hit Reverberation DMG: 8% Air Counter DMG: 57.1% Evasion Counter DMG: 131.2%

Intro	[Skill Effects] Bonnie appears near the enemy and blows her Trumpet, dealing Wind DMG. [Tag-out Skill]: Bonnie blows her French Horn, dealing Wind DMG and inflicting Wind Affliction. If she has enough Musical Scores to play the French Horn again, they are consumed to continue playing.
	[Multipliers] Trumpet Performance DMG: 129% French Horn Sound Waves DMG: 53.8%
	[Effect Details] Wind Affliction: Afflicted targets take Wind DMG over time, and Wind RES decreases by 15%.

Tuba Part	[Skill Effects] Bonnie travels forward playing à Tuba, dealing Wind DMG. In her closing performance, she deals Wind DMG in place and inflicts Resonance on hit enemies. Bonnie can be controlled while using this skill.
	[Multipliers] Tuba Performance DMG: 106.5% Tuba Closing Performance DMG: 127.8% Resonance DMG: 31.9% Resonance Duration: 2s
	[Effect Details] Resonance: Explodes after a set duration, dealing Wind DMG. If multiple Resonating enemies are close together, they explode immediately.

Finale	[Skill Effects] Bonnie sets up instruments and prepares for the grand finale. The instruments perform as an ensemble, sending sound waves forward, dealing Wind DMG and inflicting Wind Affliction. During the ensemble, Musical Scores are gained at set intervals. Reusing her Ultimate Skill ends the ensemble, deals Wind DMG, and inflicts Wind Affliction. Another Musical Score is obtained at the end.
	[Multipliers] Ensemble DMG: 255.4% Max Ensemble Musical Scores: 7 Ensemble Closing DMG: 383.1% Ensemble Closing Musical Scores Gained: 3
	[Effect Details] Wind Affliction: Afflicted targets take Wind DMG over time, and Wind RES decreases by 15%.

Bonnie Awakening Priority

A1	Recommendation: ★★★★★ Cue the Overture! Bonnie summons a Podium in front of herself upon using her Switch Skill. The podium remains for 8s and generates a steady rhythmic melody. Holding the Basic Attack button while the podium is on the field unleashes consecutive Basic Attacks. Podium: Using Basic Attacks, Special Skills, and Ultimate Skills in beat with the generated melody increases the attack's DMG by 5%, and Bonnie will gain 500 Musical Scores.
A2	Recommendation: ★★★★★ Encore! When Bonnie plays the French Horn during her Tag-out Skill, her teammates' Crit DMG increases by 40% of her Crit Rate for 5s.
A3	Recommendation: ★★・・・ Mood-y Musician The skill levels of the Basic Attack, Switch Skill, Special Skill, and Ultimate Skill increase by 2. Increases Ultimate Skill DMG by 6%.
A4	Recommendation: ★★★★★ Pick Up the Tempo! The maximum number of holdable Musical Scores increases to 25. Bonnie can gain 3 Musical Score(s) if she lands a critical hit using her Tag-out Skill, and this effect can trigger 1 time(s) every 2s.
A5	Recommendation: ★★・・・ Brilliant Fool The skill levels of the Basic Attack, Switch Skill, Special Skill, and Ultimate Skill increase by 2. Increases Tag-out Skill DMG by 6%.
A6	Recommendation: ★★★★・ Listen! My Fantasia! Bonnie can gain up to 4 stacks of Harmony when she changes her instrument. Switching to Bonnie will remove Harmony. Harmony: Tag-out Skill DMG increases by 5%.

Bonnie Profile

Frontline Maestro

Birthday	February 13
Height / Weight	145cm / 41kg
Hometown	Manafall
Likes	Her music, Friends
Dislikes	Routine, Sheet music, Oppression
Personality	Eccentric, Pure-hearted

Profile

Bonnie is bright, bubbly, and always surrounded by friends. While anyone would agree that she's an incredibly talented musician, her original compositions have a tendency to clear the room.