Heimerdinger historical 3.15.5 portrait

Historical reference

League Classic champion guideIndependent fan reference

Heimerdinger Classic Guide

the Revered Inventor

Heimerdinger is listed in the community-datamined 60-champion starting roster. This guide uses Riot 3.15.5 history and does not claim launch-verified values or a best build.

MidTopMage

Evidence: Community-datamined roster
Historical source: Riot Data Dragon 3.15.5
Last verified: 2026-07-16
Launch status: Launch verification pending

Quick Answer

Heimerdinger historical snapshot

Heimerdinger's historical kit combines Techmaturgical Repair Bots, H-28G Evolution Turret, Hextech Micro-Rockets, CH-2 Electron Storm Grenade, UPGRADE!!!. Read the spell summaries together with the historical item direction and the explicit launch-verification limits.

Roster evidence boundary

Riot confirms the 60-champion composition rule but not the complete name list. Heimerdinger is published here from a dated community-datamining observation.

Historical kit

Heimerdinger abilities

Summaries and displayed values come from the labelled historical snapshot. Observed and launch-verified fields remain empty until direct client evidence exists.

P

Techmaturgical Repair Bots

Historical function: Heimerdinger gives nearby allied H-28G Turrets and Champions increased Health Regeneration.

Historical 3.15.5; launch values pending.

Q

H-28G Evolution Turret

Historical function: Heimerdinger lays down a machine gun turret equipped with a secondary pass-through beam attack.

Cooldown: 1
Cost: 20
Range: 350

Historical 3.15.5; launch values pending.

W

Hextech Micro-Rockets

Historical function: Heimerdinger fires long-range rockets that converge on his cursor.

Cooldown: 11
Cost: 70/80/90/100/110
Range: 1525

Historical 3.15.5; launch values pending.

E

CH-2 Electron Storm Grenade

Historical function: Heimerdinger lobs a grenade at a location, dealing damage to enemy units as well as stunning anyone directly hit and slowing surrounding units.

Cooldown: 18/16/14/12/10
Cost: 85
Range: 970

Historical 3.15.5; launch values pending.

R

UPGRADE!!!

Historical function: Heimerdinger invents an upgrade, causing his next spell to have increased effects.

Cooldown: 100/85/70
Cost: 100
Range: 280

Historical 3.15.5; launch values pending.

Historical versus modern

Ability names differ between historical 3.15.5 and modern 16.14.1 (Techmaturgical Repair Bots, H-28G Evolution Turret); values and mechanics still require Classic launch-client verification.

Heimerdinger, the Revered Inventor, is documented here from Riot's 3.15.5 historical snapshot. The Mid / Top labels are an editorial navigation taxonomy, not launch-patch usage statistics.

Three-layer build system

Heimerdinger build evidence

Only layers with qualifying evidence are shown. Creator-tested and launch-verified layers are absent until their evidence gates pass.

Riot's 3.15.5 Summoner's Rift recommendation for Heimerdinger, preserved as a historical reading aid rather than a launch-patch best build.

Source era: 3.15.5
Position: Mid
Region: global historical snapshot
Sample: No match sample

Starting items

Health Potion
Doran's Ring
Warding Totem (Trinket)

Early purchases

Sorcerer's Shoes
Zhonya's Hourglass

Core direction

Sorcerer's Shoes
Zhonya's Hourglass
Morellonomicon

Situational options

Rabadon's Deathcap
Deathfire Grasp
Void Staff
Athene's Unholy Grail
Rylai's Crystal Scepter
Abyssal Scepter

Playstyle reading

Use H-28G Evolution Turret, Hextech Micro-Rockets, CH-2 Electron Storm Grenade, UPGRADE!!! as the historical kit reference, then verify live cooldowns, costs and ratios before applying this item direction.

Limitation

Historical reference only. No launch-client skill order, rune page, mastery page, matchup or performance claim has been verified.

Setup direction

Heimerdinger runes and masteries direction

A historical Season 3 reference framework for mana-based mages that need spell power, penetration and reliable casting windows.

Use this as a reading map for classic mid-lane mages, not as a claim about the launch meta.

Entity-specific checks

Frequently Asked Questions

01Is Heimerdinger officially confirmed in the complete League Classic roster?

Riot confirms a 60-champion launch composition, but the complete name list used here is a community-datamined League Wiki observation. Heimerdinger's individual roster slot is therefore labelled community-datamined until Riot publishes or the launch client verifies it.

02Are Heimerdinger's ability values launch verified?

No. The displayed historical references come from Riot Data Dragon 3.15.5; observed and launch-verified value fields remain null.

03Is this the best Heimerdinger Classic build?

No. It is a Riot-authored historical item direction with no win-rate, Tier or launch-match sample claim.

Source Ledger

Sources, versions and evidence limits

Every historical record keeps its source era. League Wiki is identified as a structural or historical-data reference, never as Riot official.

Source	Source Type	Version	Region	Verified Date	Used For	Evidence Status
League of Legends Classic	`RIOT_CLASSIC_OFFICIAL`	2026 launch announcement	Global English	2026-07-16	official product identity, 60-champion scope, returning systems	OFFICIALLY_CONFIRMED
/dev: League of Legends Classic	`RIOT_CLASSIC_OFFICIAL`	2026-07-15 article	Global English	2026-07-16	OG 40 plus 20 composition, Tier 3 runes, mastery-system scope	OFFICIALLY_CONFIRMED
League Wiki — League Classic	`WIKI_REFERENCE_ONLY`	Observed 2026-07-16; page edited 2026-07-15	Community-maintained global reference	2026-07-16	60-name roster observation, 141-item observation, 15-spell observation, information architecture	COMMUNITY_DATAMINED
Riot Data Dragon 3.15.5	`RIOT_HISTORICAL_DDRAGON`	3.15.5	Historical static-data snapshot; not region-equivalent launch evidence	2026-07-16	champion identities, historical kits, historical recommended item sets, items, Tier 3 runes, masteries, summoner spells, historical assets	HISTORICAL_REFERENCE