Every spell Rumble casts gives him Heat. When he reaches 50% Heat he reaches Danger Zone, granting all his basic abilities bonus effects. When he reaches 100% Heat, he starts Overheating, gaining bonus Attack Speed and granting his basic attacks bonus damage, but making him unable to cast spells for a few seconds.
QFlamespitter10/9/8/7/6s
Rumble torches opponents in front of him, dealing magic damage in a cone for 3 seconds. While in Danger Zone this damage is increased.
WScrap Shield6s
Rumble pulls up a shield, protecting him from damage and granting him a quick burst of speed. While in Danger Zone, the shield strength and speed bonus is increased.
EElectro Harpoon0.5s
Rumble launches a harpoon, electrocuting his target with magic damage, slowing their Move Speed, and reducing their Magic Resist. Rumble can carry 2 harpoons at a time. While in Danger Zone the damage and slow percentage is increased.
RThe Equalizer130/105/80s
Rumble fires off a group of rockets, creating a wall of flames that damages and slows enemies.
Base stats
Health640 +105/lvl
Mana150
Attack Damage64 +3.2/lvl
Attack Speed0.644 +1.85/lvl
Armor36 +4.7/lvl
Magic Resist28 +1.55/lvl
Base Health Regen7 +0.6/lvl
Move Speed345
Range125
Melee · Resource: Heat
Patch history
26.22· Nov 4, 2026Buffed
The Equalizer
AP ratio per second increased to 40% AP from 35% AP.Buff
26.19· Sep 23, 2026Adjusted
Junkyard Titan
Overheated bonus attack speed reduced to 30+((100-30)/17)*(x-1)*(0.7025+0.0175*(x-1)) from 50+((130-50)/17)*(x-1)*(0.7025+0.0175*(x-1)).Nerf
Overheated monster cap damage increased to 90+((175-90)/17)*(x-1)*(0.7025+0.0175*(x-1)) from 65+((150-65)/17)*(x-1)*(0.7025+0.0175*(x-1)).Buff
26.13· Jun 24, 2026Adjusted
Flamespitter
Base damage per tick reduced to 4.17 to 12.5 from 5 to 13.33.Nerf
AP ratio per tick increased to 8.75% AP from 8.33% AP.Buff
26.4· Feb 19, 2026Nerfed
Stats
Base health reduced to 640 from 655.Nerf
The Equalizer
Base damage per tick reduced to 30 to 70 from 35 to 70.Nerf
25.17· Aug 27, 2025Nerfed
Junkyard Titan
Overheat on-hit damage target health ratio reduced to 4% of target's maximum health from 5%.Nerf
Flamespitter
Base damage per tick reduced to 5 to 13.33 from 5 to 15.Nerf
35 older patches
25.16· Aug 13, 2025Adjusted
General
Each ability's Heat generation amount is now displayed in the HUD when the setting "Show Spell Costs" is enabled. They exist in place of resource costs for most other champions.
Flamespitter
AP ratio per tick reduced to 8.33% AP from 9.17% AP.Nerf
Target health ratio per tick reduced to 0.5 to 0.67% of target's maximum health from 0.5 to 0.77%.Nerf
Bug Fix: The timing of damage by casters on the red side will now match the timing of damage by casters on the blue side.
Debuff now affects enemies once at the same time as they are hit when the debuff is applied instead of refreshed.
New Effect: Upon being affected by Flamespitter's debuff, targets now receive damage through a burn that lasts 0.6 seconds, refreshing on subsequent hits and not stacking with the flame if already debuffed.Buff
Now has an internal counter to apply 2 additional instances of damage at most after the final refresh, including the final application instance, as a safety mechanism.
The Equalizer
Bug Fix: The timing of damage by casters on the red side will now match the timing of damage by casters on the blue side.
Bug Fix: Rocket zones no longer start affecting enemies at an up-to 0.25 second delay (their debuff application is no longer fuzzy).Buff
Debuff hit cadence increased to once every 0.25 seconds from once every 0.5 seconds.Buff
Now has an internal counter to apply 4 additional instances of damage at most after the final refresh, including the final application instance, as a safety mechanism.
2 This may sometimes be inconsistent and apply one more instance at most beyond this maximum after the whole duration, when standing inside overlapping zones.
Bug Fix: Each rocket zone now always lasts exactly 4.5 seconds each instead of all rockets' zones disappearing at once 5 seconds after the first missile lands due to their duration collectively refreshing to the same amount with each subsequent rocket launch.Buff
25.12· Jun 11, 2025
Flamespitter
Target health ratio per tick increased to 0.5 to 0.77% of target's maximum health from 0.5 to 0.67%.
Total health ratio increased to 6 to 9.2% of target's maximum health from 6 to 8%.
Electro Harpoon
Base slow increased to 15 to 35% from 10 to 30%.
Flamespitter
Target health ratio per tick reduced to 0.5 to 0.67% of target's maximum health from 0.5 to 0.83%.
Total health ratio reduced to 6 to 8% of target's maximum health from 6 to 10%.
Electro Harpoon
Base slow reduced to 10 to 30% from 15 to 35%.
14.24
Flamespitter
AP ratio per tick increased to 9.17% AP from 8.33% AP.
Total AP ratio increased to 110% AP from 100% AP.
Scrap Shield
AP ratio increased to 30% AP from 25% AP.
14.23
Electro Harpoon
Bug Fix: No longer incorrectly gains its Junkyard Titan 3 bonus based on the resulting heat amount instead of the heat amount prior to casting the ability.
14.22
Stats
Base health increased to 655 from 625.
14.18
Flamespitter
Base damage per tick reduced to 5 to 15 from 6.67 to 15.
Maximum base damage reduced to 60 to 180 from 80 to 180.
AP ratio per tick reduced to 8.33% AP from 9.17% AP.
Maximum AP ratio reduced to 100% AP from 110% AP.
Electro Harpoon
Base damage reduced to 55 to 155 from 60 to 160.
14.17
Junkyard Titan
Damage health ratio reduced to 5% of target's maximum health from 6%.
14.14
Flamespitter
Base damage per tick reduced to 6.67 to 15 from 10.42 to 15.42.
Total base damage reduced to 80 to 180 from 125 to 185.
Minion damage changed to 70% at all ranks from 55 to 75%.
Removed: No longer prevents minions hit from dying to allied minions if they would die to one tick of damage.
New Effect: Now deals an additional tick of damage if it would kill a minion.
14.9
Stats
Selection radius reduced to 140 units from 165.
14.2
Stats
Base attack damage increased to 64 from 61.
Electro Harpoon
AP ratio increased to 50% AP from 40% AP.
Flamespitter
Base damage per tick reduced to 10.42 to 15.42 from 11.25 to 16.25.
Total base damage reduced to 125 to 185 from 135 to 195.
Electro Harpoon
Magic resistance reduction reduced to 10 to 18% from 12 to 20%.
Maximum magic resistance reduction reduced to 20 to 36% from 24 to 40%.
Danger Zone magic resistance reduction reduced to 15 to 27% from 18 to 30%.
Danger Zone maximum magic resistance reduction reduced to 30 to 54% from 36 to 60%.
The Equalizer
Bug Fix: Targeting no longer behaves improperly when Clamp Cast Targeting is enabled.
13.23
Stats
Undocumented / Bug: Attack windup increased to 29% from 20%.
Crit windup time unchanged.
13.22
Stats
Attack windup reduced to 20% from 22.916667%.
Attack windup of non-critical attacks was increased to 29% in data by accident, but micropatched by patch release to its proper 20% value.
Bug Fix: Red overlay VFX during an overheat has been restored.
Flamespitter
Bug Fix: VFX is no longer cut off by the ground.
13.12
Stats
Base health reduced to 625 from 659.
Health growth increased to 105 from 99.
Base health regeneration reduced to 7 from 8.
Junkyard Titan
Maximum heat increased to 150 from 100.
Overheat threshold increased to 150 heat from 100.
Danger Zone threshold unchanged at 50 heat.
Overheat duration reduced to 4 seconds from 5.25.
Bonus attack speed increased to 50+((130-50)/17)*(x-1)*(0.7025+0.0175*(x-1)) from 20% to 80%.
Damage cap against monsters changed to 65+((150-65)/17)*(x-1)*(0.7025+0.0175*(x-1)) from 80 at all levels.
Flamespitter
Base damage reduced to 135 to 195 from 180 to 340.
New Effect: Now deals up to 6 to 10% of the target's maximum health, capped at 65+((300-65)/17)*(x-1)*(0.7025+0.0175*(x-1)) against monsters.
Minion damage reduced to 55 to 75% from 60 to 80%.
Scrap Shield
Base shield reduced to 25 to 145 from 60 to 180.
AP ratio reduced to 25% AP from 45% AP.
New Effect: Shield now scales with 4% of his maximum health.
Electro Harpoon
Heat generation increased to 20 from 10.
The Equalizer
Cooldown increased to 130 to 80 seconds from 100 to 70.
13.5
Electro Harpoon
Magic resistance reduction increased to 12 to 20% from 10% at all ranks.
Maximum magic resistance reduction increased to 24 to 40% from 20% at all ranks.
Danger Zone magic resistance reduction increased to 18 to 30% from 15% at all ranks.
Danger Zone maximum magic resistance reduction increased to 36 to 60% from 30% at all ranks.
12.10
Stats
Base health increased to 659 from 589.
Health growth increased to 99 from 85.
Armor growth increased to 4.7 from 3.5.
Magic resistance growth increased to 1.55 from 0.75.
Scrap Shield
Base shield reduced to 60 to 180 from 60 to 120.
Shield AP ratio reduced to 45% AP from 50% AP.
12.5
Electro Harpoon
Bug Fix:Overheated state no longer visually disappears father than it should be if it was triggered by Electro Harpoon.
12.4
Stats
Base armor increased to 36 from 31.
11.18
Junkyard Titan
Bonus attack speed changed to 20% to 80% from 50% at all levels.
Scrap Shield
Cooldown reduced to 6 seconds at all ranks from 7 to 6.
11.15
Junkyard Titan
Bug Fix:Heat is now checked more consistently:
Delay until Heat decays is now much more consistent.
Overheated duration is now consistently 5.25 seconds from only averaging this value.
Heat no longer gets returned to a previous value when using the Undo function in the shop, which allowed generating high values of heat at the start of the game easily.
Electro Harpoon
Bug Fix: When targeting very far away, no longer tries to walk "in range", overriding Rumble's orders.
(This was already fixed in V11.14, but documented in this patch instead).
11.14
Electro Harpoon
Undocumented/Bug Fix: Will now cast immediately no matter how far away the cursor is, instead of causing Rumble to walk closer to his cursor if cast further than 10000 units away.
11.13
Scrap Shield
Cooldown increased to 7 to 6 seconds from 6 at all ranks.
Bonus movement speed reduced to 10 to 30% from 15 to 35%.
Danger Zone bonus movement speed reduced to 15 to 45% from 22.5 to 52.5%.
11.11
Junkyard Titan
Damage cap against monsters reduced to 80 from 120.
11.9
Junkyard Titan
Overheat on-hit base damage reduced to 5 to 40 from 10 to 50.
Overheat on-hit AP ratio reduced to 25% AP from 30% AP.
11.8
Stats
Base magic resistance reduced to 28 from 32.
Magic resistance growth reduced to 0.75 from 1.25.
Junkyard Titan
Overheat on-hit base damage reduced to 10 to 50 from 25 to 110.
New Effect: Now deals 6% of target's maximum health magic damage on-hit when overheated, capped at 120 against monsters.
New Effect: Now gains 50% bonus attack speed while overheated.
Electro Harpoon
New Effect: Now reduces target's magic resistance by 10% for 4 seconds, increased to 15% while in Danger Zone.
