Where is the first confirmed TOWER boss fight?

Gameplay footage confirms a boss encounter at floor 20, while the guide keeps unverified later boss names separate.

What happens at TOWER floor 25?

Floor 25 unlocks Rebirth, and later Rebirths raise the required floor.

The level 1,000 Golden Goose event boss drops about 30,000 Cash per kill plus a coin-drop burst.

No. Boss fights are confirmed, but official boss names have not been published.

The TOWER is the game's boss arena — climb floors and beat every boss.

Confirmed on video: the TOWER contains boss fights at certain floors.
Bax (3.2M subs, 21-min run) calls the level-20 encounter "a boss fight" and "the boss fight you failed last time".
Specific floors beyond 20 and boss names are NOT published — each floor's opponent is otherwise an ordinary enemy chicken.

Level 1,000 golden goose — recurring event in the middle "chaos" area (not a tower floor boss).
Confirmed on video (Kream Blox 33-min run).
Drops ~30,000 cash per kill + a coin drop burst.
You can fight it, ride it, and it can shake you off.
Event reappears roughly every few minutes.
First reachable around floor 25 in a run (Bemmy footage).

Boss fights are confirmed via multiple gameplay videos (Bax, Kream Blox, Bemmy) + official description.
No boss is officially named — this page keeps verified observations separate from unknowns.