The eleven bosses, and the two the badges name
The listing promises eleven bosses from Bramblehorn to the Abyssal Warden. The badge list names two of them. Here is what is confirmed and what is a count, not a roster.
Bramblehorn (Forest) and the Abyssal Warden (bottom of the raid) are the two bosses the developer names. The other nine exist as a count, not as a public roster.
The game's listing promises 11 bosses, "from Bramblehorn in the Forest to the Abyssal Warden at the bottom of the raid". The badge list names two bosses by name. Everything else about the roster is a count, not a list — and this page will not invent the nine missing names.
What is actually confirmed
| Boss | Where | Source |
|---|---|---|
| Bramblehorn | The Forest | The game's own listing names it as the first boss |
| Abyssal Warden | Bottom of the raid | The game's own listing names it as the last |
| Thaddeus Crowe | Not stated | A badge exists for beating him (5,520 players hold it) |
Those are the three bosses with a name attached to a public source. The remaining eight of the advertised eleven are not named anywhere we could find.
The boss badges that do exist
Only one badge in the set is explicitly a boss kill:
| Badge | What it takes | Players |
|---|---|---|
| The Hollow Bargain | Beat Thaddeus Crowe | 5,520 |
Everything else in the badge list is a land clear, a level, a system, or a feat. That is worth knowing: beating a boss does not appear to grant a badge of its own in most cases — clearing the land does.
The interesting number: 5,520
Thaddeus Crowe has been beaten by 5,520 players. Compare that to the land badges around him:
| Badge | Players |
|---|---|
| Cleared the Sunken Dunes (3rd land) | 6,601 |
| Beat Thaddeus Crowe | 5,520 |
| Cleared the Drowned Tide (4th land) | 3,702 |
His count sits between the third and fourth land clears. Two readings:
- He is a land-adjacent boss, gated around the third-to-fourth land boundary, and most players who reach him beat him (5,520 of 6,601 is 84%).
- Or he is optional content around that point that most players engage with anyway.
Either way, the useful fact for you: he is not an endgame boss. If you have cleared three lands, you are at or past his tier.
The two named bosses, and what the names imply
Bramblehorn — the Forest's boss. Forest-coded name: brambles, thorns, growth. It is the first boss in the game and the one everybody meets, so it is tuned as a tutorial boss. You will beat it. See your first hour.
The Abyssal Warden — the raid's final encounter, at the bottom of "the raid". Abyssal is deep-water or void-coded. No badge exists for it, and the smallest map badge in the game is 52 players (Labyrinth of Legends), so the Warden is held by fewer than 52 players — possibly far fewer, possibly nobody in a countable way yet.
That is the honest state: the final boss of Arcane 101 is, by the badge evidence, content almost nobody has reached. The game is 83 days old.
How to prepare for a boss in this game
Boss preparation here is not about a mechanic list — nobody has published one, and inventing one per boss would be fiction. It is about the three things the data says players get wrong:
- Level before the boss, not during it. The under-levelled player base is the single clearest signal in the badge data. See level vs map.
- Upgrade one card to a high tier — 7,082 players have a Tier V card, fewer than the 14,393 who own a legendary. Card tiers.
- Bring a second element. A single-element deck that meets a resistant boss has no plan B. Choosing a school.
Related
- The eight lands — where each boss sits.
- The 27-badge funnel — especially The Hollow Bargain's place in it.
- Frostfang Pass — the wall before most of the roster.
