Tyrian boss: Fireball Ship
Fireball Ship is a boss of Tyrian, fought in 3 levels: Lava Exit (episode 4), Ice Secret (episode 4), Brainiac (episode 4).

Fights
Each fight lists the parts the game tracks with the boss health bar. Pictures link to each part's card in the bestiary; armor is at Normal difficulty.
Lava Exit (episode 4 — group 1 of 2)
Picture: parts placed as the level spawns them.
10 parts, armor 50 ×8, 10 (1 indestructible) at Normal difficulty.
Lava Exit (episode 4 — group 2 of 2)
Picture: parts placed as the level spawns them.
10 parts, armor 50 ×8, 10 (1 indestructible) at Normal difficulty.
Ice Secret (episode 4 — group 1 of 2)
Picture: parts placed as the level spawns them.
8 parts, armor 50 each at Normal difficulty.
Brainiac (episode 4 — group 1 of 3)
Picture: parts placed as the level spawns them.
12 parts, armor 50 ×8, 254 (3 indestructible) at Normal difficulty.
Name and sources
Fandom gives it as the boss of Lava Exit, Ice Secret and Brainiac; the game tracks the same spike_fortress parts (16 to 28) in the three levels.
- Tyrian Fandom wiki, level pages (boss field of the level infobox)
- Tyrian Fandom wiki, boss pages
- Fireball Ship on the Tyrian Fandom wiki
Technical names
Parts as named for modders: spike_fortress_16, spike_fortress_17, spike_fortress_18, spike_fortress_19, spike_fortress_25, spike_fortress_26, spike_fortress_27, spike_fortress_28, bank_33_20, bank_33_10, bank_33_18, bank_33_19, bank_33_26c.
Sprite banks: Spike fortress, Bank 33.