Special Stages · Stage 1

Sender Unknown

225-00

Sender Unknown is a Battle Cats stage in Mystery Package. It costs 30 energy and sends 2 enemy spawn lines — led by Package Doge as the boss — against a 222 HP enemy base, and clearing it rewards 2,679 XP. Its enemies carry the Metal trait, so cats that target it do the most work here.

Data updated: 2026-08-31

30Energy Cost
2,679XP Reward
222Enemy Base HP
3,600Stage Length
10Max Enemies
1.1Difficulty
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Cats that counter Sender Unknown

Cats whose attacks target Metal, best DPS first — the traits this stage’s enemies actually carry:

Lovestruck Lesser DemonDaybreaker IzanagiMighty Rekon KorpsGude-Cat MachineAgent StaalKing of Doom Phono

Stage rewards

12% — XP ×100,000 · first clear · Treasure Radar12% — Cat Ticket ×2 · first clear12% — Speed Up ×5 · first clear12% — Treasure Radar ×1 · first clear12% — Rich Cat ×2 · first clear12% — Cat CPU ×5 · first clear12% — Cat Jobs ×1 · first clear12% — Sniper the Cat ×2 · first clear

Enemy spawns (2)

EnemyStrengthCountFirst SpawnRespawnBase HP TriggerNotes
Package Doge100%10.1s—100%Boss
Ms. Sign100%∞900s900s100%—
All Mystery Package stages