Mongil: Star Dive

Bonnie guide and info.

Bonnie

Frontline Maestro

4★ WIND Support Ranger

Analysis

Unique Crit DMG amplifier with AoE explosions. Surprisingly viable in World at A2+. Needs heavy Awakening investment to justify use in Conquest or Rift.

Tier Position

World / Path T1

Conquest T2

Dimensional Rift T2

Game Modes

World / Path T1

Bonnie is one of the more surprising World/Path performers at A2+, where she can grant up to 30% Crit DMG to teammates while personally dealing AoE explosion damage. She doesn't heal or buff Wind DMG like others, but her nuke amplification is a genuinely unique tool.

Conquest T2

In Conquest, Bonnie serves primarily as a Crit DMG amplifier for Assassin nukes and an occasional sub-DPS. Francis can fill a similar amplification role without the Awakening requirement, which keeps Bonnie in T2 here. Still, she's not useless — just outcompeted.

Dimensional Rift T2

Bonnie's value in Rift is highly conditional on your main DPS having high Crit. Without that, she contributes little. With enough investment she can min-max impressively, but the opportunity cost of those resources makes her a niche pick at best.

Pros

Unique Crit DMG amplification role — up to 30% Crit DMG buff at A2+

Personally contributes AoE explosion damage rather than just buffing

Surprising World/Path performer when teammates have strong Crit stats

Cons

Value highly conditional on teammates having significant Crit investment

Francis provides similar amplification without the Awakening cost

Requires A2+ investment before she meaningfully justifies her slot

Basic Information

Name: Bonnie
Element: WIND
Role: Support
Attack Range: Ranger
Rarity: 4★ (SR)
Life Skill: LIFE_SKILL_DESC_103401

Stats

Grade

Lv. 1

HP 389

ATK 46

DEF 14

Groggy DMG 14

Supporter 48

Skills

Trumpet Part Normal_ATK

Bonnie deals Wind DMG by blowing her Trumpet at an enemy.

1st Hit DMG: 24.0% 2nd Hit DMG: 21.3% 2nd Hit Reverberation DMG: 21.3% 3rd Hit DMG: 40.0% 3rd Hit Reverberation DMG: 40.0% Air Counter DMG: 57.1% Evasion Counter DMG: 131.2%

Tuba Part Active01

Bonnie travels forward playing a 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.

Resonance
Explodes after a set duration, dealing Wind DMG. If multiple Resonating enemies are close together, they explode immediately.

Tuba Performance DMG: 106.5% Tuba Closing Performance DMG: 159.8% Resonance DMG: 159.8% Cooldown: 13.6s

Finale Ultimate

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.

Ensemble DMG: 255.4% Ensemble Closing DMG: 383.1% Cooldown: 3.0s

Intro Skill_Tag

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.

Trumpet Performance DMG: 129.0% French Horn Sound Waves DMG: 53.8% French Horn Performance DMG: 35.8%

Fantasia Passive

Switching to another instrument during combat increases Bonnie's Crit Rate.

If she lands a critical hit, she can gain a Musical Score.