LegionBound Ascension Guide: How to Merge Heroes (2026)

Updated 2026-10-22: Correction: an earlier version said an Ascended Warrior still triggers synergy for its loop (Klokinator's Steam guide says Ascended heroes don't count toward anyone's synergy, and Warrior was never the Sorcerer's partner anyway), told you to find "a second copy" of Warrior for a same-class merge (the window asks for two unique heroes), said the merge happens automatically (you pick the pair and press Ascend), and said losing an Ascended hero costs both heroes permanently, that Ascension restores full HP, that the merge reads item states, and that recruitment-speed and item-quality skill nodes help, none of which has a source. The "first Ascension by wave 5" target, the launch discount line and the September review figures are gone too. The images are now from the official Steam trailer and store page.

LegionBound Ascension: quick answer

• Only promoted (synergy) heroes can ascend, two at a time, and the result has both heroes' stats and abilities
• An Ascended hero no longer counts as anyone's synergy partner
• Since Patch 1.1 you can preview the Ascended hero before confirming
• Steam lists over 800 possible Ascension heroes
• Ascensions are rare: a community guide puts it at about five in a 100-wave run
• The Protagonist only ascends with another Protagonist, into the True Legend

What LegionBound Ascension actually does

Spicy Garlic Games announced the system in a demo update in February 2026: "Combine 2 of any Synergy heroes together, merging their stats and abilities into a completely unique class." The Steam store page puts it more briefly: "Once your heroes have proven themselves, combine them into powerful Ascension classes."

Klokinator's Class Synergy/Promotion Guide adds the detail players need. A hero synergizes when its partner is on the field, which "allows them to promote into their second tier. Once promoted, Synergized units can be combined into Ascended Units." The result "basically just add[s] the powers of both units together, though they often have minor improvements or alterations". One Steam reviewer sums it up as two characters that "combine into 1 that has both class".

The window itself (pictured above) reads "Choose Two Unique Heroes": you place two heroes on the pedestals, then press Ascend and Perform Ascension.

Image: LegionBound release trailer on Steam (Spicy Garlic Games). The trailer card now reads 800, with an older figure crossed out behind it.

How many Ascension heroes are there?

The launch announcement on April 27 listed "Over 400 ascension classes to combine". Patch 1.1 (July 23) added 12 heroes and "over 400 additional Ascension combinations", each "with their own appearance, abilities, passives, and role within a party". The store page now says "Over 800 possible Ascension heroes to combine".

So the number counts pairings of classes, not item or stat variations. Two different pairs give you two different Ascended heroes.

The rule that breaks chains: Ascended heroes don't count for synergy

This is the one to remember. Klokinator: "Ascended Heroes do NOT count toward synergizing other units. If you need a Sorceror to synergize your Warrior, an Ascended unit which has a Sorceror fused will not count for synergy purposes. Only a tier 1 or 2 Sorceror will work!"

In practice: every class learns its synergy class from one partner (the synergy guide lists all of them). If you merge that partner, the class that was learning from it loses its partner. So before you ascend anyone, ask: does any hero on my field learn from this one? If yes, pick a different pair or keep a second, unmerged copy of that partner on the field.

The safest candidates are heroes at the head of a chain: promoted, but nobody on your field learns from them. In a Warrior, Sorcerer, Witch run, that's the Warrior (the Lumberjack would learn from him, but he isn't there). The Sorcerer is not safe, because the Warrior learns Spellblade from him. The Witch can't merge yet: she needs a Cleric to promote.

Step-by-step: your first Ascension

1. Promote first. Field a run of neighbours from one loop until at least two heroes show their synergy class. Only promoted heroes can merge.

2. Pick two unique heroes that nobody learns from. Check the partner table before choosing. A promoted hero with no learner on the field is a free merge.

3. Preview the result. Since Patch 1.1, "Ascended heroes can now be previewed before confirming an Ascension." Use it every time; with 800 combinations, nobody remembers them all.

4. Confirm and refill. The merge frees a slot. Spend it on the next neighbour in your chain so another hero promotes.

5. Leave the Peasant for later. Its Protagonist needs three other synergy heroes, and the Hero Synergy Groups guide notes that "unlike other ascended classes, the Protagonist ascends with another Protagonist". Klokinator says the result is the True Legend, "the only possible Ascension for the Protagonist", which can't use DEX, MAG or DEF keystones, only STR ones.

When to ascend

No official source gives a wave for it, and we wouldn't invent one. Klokinator's guide does give a sense of scale: "Late in most non-Endless runs, around wave 80, you might start seeing buyable Ascended units in the shop. These are fantastic value because in a typical 100 wave run, you might Ascend at most 5 units."

Five merges in a hundred waves means each one is a big decision. Our call: ascend when a promoted pair at the end of your chain is available and the preview shows a hero you'd rather have than the two you're giving up. Don't merge just because the button lights up.

A fix worth knowing about if you play Adventure Mode: Patch 1.02 fixed "a bug where if you ascend at the end of an adventure battle you may not keep the hero", so that old warning no longer applies.

Screenshot: LegionBound Steam store page (Spicy Garlic Games). A boss fight against the Wormlord at wave 24, with the Ascension button at bottom left.

Auras and kits on Ascended heroes

An Ascended hero keeps both kits. Patch 1.05 confirmed it for auras: "Ascended heroes with combined auras now correctly apply both auras." The hero's type label is shown in the shop as well (Patch 1.053 fixed it "being incorrect in shop"), which matters if you're building around type keystones.

Wujooz Blazeman Gaming's video shows Ascended heroes being levelled up in a long run, which is a good way to see how the merged kits look in play:

*Video: "LEVEL MAXXING MY ASCENDED HEROES | Legionbound", Wujooz Blazeman Gaming on YouTube*

Our take

Ascension is the most exciting button in LegionBound and the easiest one to misuse. The merged heroes are strong, the preview removes most of the guesswork, and there are hundreds of them to find. But the partner rule means one careless merge can quietly cost you a synergy class you'd built toward for twenty waves. Check who learns from whom, merge the heads of your chains, and you get the upside without the hidden cost.

Frequently asked questions

What is Ascension in LegionBound? Merging two synergy heroes into one new hero with both kits. Steam lists over 800 possible results, and Patch 1.1 added a preview before you confirm.

Which heroes can ascend? Promoted (synergy) heroes, two unique ones at a time. The Protagonist ascends only with another Protagonist.

Do Ascended heroes count for synergy? No. Merge a partner and the hero learning from it loses its synergy class.

When should I ascend? No official wave. A community guide puts it at about five Ascensions in a 100-wave run, with buyable Ascended units showing up around wave 80.

How many Ascension combinations are there? Over 800 on the current store page: 400+ at launch and 400+ more from Patch 1.1.

Related Reading

• LegionBound Synergy Guide: Launch 30 Classes: every partner pair, so you can check who learns from whom before merging.
• LegionBound Ascension Chain: Timing, Risk, Recovery 2026: second and third merges in the same run.
• LegionBound Advanced Builds: Late-Game Class Chains: chains, hero types and keystones.
• LegionBound Tier List 2026: our ranking of the launch 30 by loop position.
• Legionbound Tips and Tricks: First Runs, Rows, Skill Tree: first-run fundamentals.
• LegionBound Warrior Group: All 14 Classes: the largest loop.
• LegionBound Tax Collector Group: All 4 Classes Loop: the smallest loop.
• LegionBound Battle Mode Guide: endurance runs, where the long merges happen.
• LegionBound Adventure Mode Guide: buildings and the Endbringer.
• LegionBound complete guide hub: every LegionBound guide in one place.

References

• LegionBound on Steam: store page; over 800 Ascension heroes; Release Trailer and screenshots used here
• Ascension Hero Update!: February 2026 demo update that introduced Ascension and the three-keystone limit
• LegionBound 1.1 - Volatile Elements: 400+ new combinations and the Ascension preview
• Class Synergy/Promotion Guide: Klokinator's Steam guide; promotion, Ascended heroes and synergy, True Legend, shop Ascended units
• Hero Synergy Groups: WillieBillie's Steam guide; the launch loops and the Protagonist exception
• Hero Class Guide: Myzri's Steam guide; partner and synergy class for all 42 classes