Trait
Bug Heart Uplift
After actively defeating an enemy, your team gains 5 random Devotions.
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NO.215
Demon Redgem
Bug Dark Final Form Original Form
Likes to rest in dark corners of caves, setting up elaborate and highly poisonous webs in advance to ambush prey. The tips of its walking legs are covered in dangerous venom, and its sharp, hard tentacles can serve as both offensive spears and defensive shields.
Dex Number
215
Category
Spider Spirit
Height
1.32~1.55 M
Weight
42.5~62 KG
Updated
2026-04-02
Distribution
Commonly found in mountainous areas
Recommended Skill Sets
Speed Attack Cleanup Build
Playstyle
Utilize speed advantage for preemptive damage. Flying Sever as low-cost cleanup to trigger trait, Insect Strike for burst kills during response states, Cocoon for sustain, and Equivalent Exchange to counter enemy burst skills. Fast overall tempo, excels at snowballing.
Why this set works
Maximize the high Physical Attack and speed advantages of Demon Red Diamond. Use Fly Cut's low energy cost for quick收割 to trigger trait snowballing, Bug Strike as main burst damage, Cocoon provides sustain, and Equivalent Exchange ensures survival. Comprehensive playstyle suitable for most matchups.
Flying Sever
Why pick this skill
Core finisher skill. Only 20 Energy Cost, combined with Trait can trigger 5 random Devotions after defeating enemy, quickly accumulating team advantage. The +20 power Devotion effect also boosts subsequent output.
Bug Strike
Why pick this skill
Core damage skill. Power doubles when responding and ignores type resistance. Has miraculous effects against super-effective types or high-defense targets. Demon Red Diamond's strongest burst method.
Cocoon
Why pick this skill
Sustain and team support skill. Recovers 20% HP to ensure survival, 10% Life Drain Tribute enhances team sustained combat capability, extremely valuable in endgame or attrition battles.
Equivalent Exchange
Why pick this skill
A powerful counter-attack skill. 90% damage reduction provides extreme survival capability; 50% lifesteal when countering attacks enables counter-healing—a key survival tool against high-burst enemies
Burst Suppression Build
Playstyle
Open with Power Devour to weaken enemies and strengthen self, use Extreme Tear to attempt instant kill on key targets at full HP, follow with Flying Sever to trigger Snowball Trait on success, use Cocoon to recover when attack is lowered or at low HP. Aggressive tempo, pursuing rapid enemy reduction.
Why this set works
Limit Tear serves as the opening high burst, Flying Cut executes to trigger the trait, Power Devour buffs self and weakens enemies, Cocoon provides sustain. Suitable for quickly establishing advantages, but requires careful HP management.
Extreme Rend
Why pick this skill
High-power Physical attack (135 Power). The main drawback is -50% to both offenses after use when HP is above 50%, but extremely powerful as an opening burst or one-shot skill at full or high HP.
Flying Sever
Why pick this skill
Core finisher skill. Low Energy Cost combined with Extreme Tear priority OHKO can immediately trigger Trait to provide 5 Devotions for entire team, forming continuous pressure.
Power Devour
Why pick this skill
Team support skill: enemy all skill power -20, self all skill power +20, this trade-off significantly improves team survival and self damage output, massive advantage in direct confrontation.
Cocoon
Why pick this skill
Sustain skill. Recovers 20% HP and grants team Life Drain Tribute, recovers state after Extreme Rip attack reduction or at low HP, ensuring sustained combat capability.
Armor Break Attrition Build
Playstyle
Priority Keen Eye significantly reduces enemy dual defenses, followed by Bug Strike burst output, Bat provides stable lifesteal sustain, Equivalent Exchange counters enemy key skill retaliation. Relatively steady tempo, excels against tank-type enemies.
Why this set works
Centered around Keen Eye's extreme defense reduction, Insect Strike for burst damage, Bat for stable lifesteal sustain, Equivalent Exchange to handle counters. Suitable against high-defense targets or prolonged battles, with strong team support capability.
Bat
Why pick this skill
Lifesteal skill. 100% of damage dealt converted to HP recovery. Demon Red Diamond's most stable sustain method; combined with high Physical Attack, recovery amount is substantial.
Keen Eyes
Why pick this skill
Defense reduction support skill. Extreme -120% enemy physical/magic defense reduction, creates excellent conditions for subsequent physical output, can also assist teammates
Bug Strike
Why pick this skill
Core damage skill. After Sharp Gaze defense reduction, Bug Strike's power doubling effect can deal devastating damage. The resistance-ignoring trait can also overcome type disadvantages.
Equivalent Exchange
Why pick this skill
Counter-attack response skill. Damage reduction + lifesteal combination allows Demon Red Diamond to survive and heal when enemy counters, forming dual lifesteal security with Bat.
Notes
- Demon Red Diamond has extremely high Physical Attack (147) and excellent Speed (115), but low defenses, especially Magic Defense (74). Its trait [Invigorating Bug Heart] provides 5 random Devotions to the entire team after actively defeating an enemy, giving it strong snowballing cleanup potential. Bug+Dark typing is weak to Flying, Fire, Light, Bug, and Cute, so entry timing matters. Its skill pool focuses on physical damage with lifesteal, defense reduction, power reduction, and healing support, suiting it as a fast cleanup attacker or sustained damage dealer
Gallery
True Body
Evolution Chain
Stage 1
Shortcrawler
Skills
Lv. LV1
Bat
Energy: 65
Deals physical damage and drains 100% HP.
Lv. LV1
Keen Eyes
Enemy gains Physical Defense and Magic Defense -120%.
Lv. LV1
Flying Sever
Energy: 20
Deals physical damage. Your team gains 1 Devotion: Power +20.
Lv. LV4
Stinger
Energy: 80
Deals physical damage to the enemy creature.
Lv. LV13
Web Bind
Energy: 60
Deals physical damage. Enemy gains Physical Defense -30%.
Lv. LV16
Power Devour
Enemy gains All Skill Power -20; self gains All Skill Power +20.
Lv. LV23
Extreme Rend
Energy: 135
Deals Physical DMG. If HP is above 50%, gains Dual ATK -50% after use.
Lv. LV28
Counterweight
Deals physical damage. The higher the enemy's Weight, the higher this skill's Power.
Lv. LV29
Grass Bug Impact
Energy: 80
Deals Physical DMG. If the enemy switches Roco this turn, this skill's Power increases by 50 and ignores the enemy's Type Resistance.
Lv. LV30
Cocoon
Restore 20% HP to self; your team gains 1 Devotion: gain 10% lifesteal.
Lv. LV33
Bug Strike
Energy: 90
Deals physical damage. Counter state: This skill's Power becomes 2x, ignoring the enemy's Type resistance.
Lv. LV35
Equivalent Exchange
90% damage reduction, when responding to an attack: gain 50% Life Steal.
Lv. LV38
Calamity
Energy: 150
Deals physical damage to self. Counter state: instead deals physical damage to the enemy.
Matchups
Weak Against
Wing, Fire, Light, Bug, Cute
Stats
HP 100
Physical Attack 147
Magic Attack 137
Physical Defense 93
Magic Defense 74
Speed 115
Total 666
Handbook Tasks
Demon Red Diamond's Tome Mission
Progress: 7/7
Catch 1 Pokémon
Target: 1
Catch 1 Pokémon with Amazing Talent
Target: 1
Catch 20 Pokémon
Target: 20
Catch 1 Prismatic Mutant Pokémon
Target: 1
Obtain "Destined Hero" Medal
Target: Obtain "Destined Hero" Medal