Champion build
K9 Mastiff
40KPrice 600 gold
Retaliates when taking damage. Temporarily gains the Frenzied status effect at critically low Wounds.
Core build
K9 starts every run with Mechanical Bite.
Take Sabaton early so the evolution is ready the moment Mechanical Bite reaches level 8. All evolutions
What K9 gains by level
| Level | Gain |
|---|---|
| 20 | Veterancy +100% for this level only |
| 40 | Veterancy +100% for this level only |
Starting stats
Only the stats where this champion differs from most others.
| Stat | K9 | Most champions |
|---|---|---|
| Move | 130% | 100% |
| Chance | 110% | 100% |
How to unlock K9
Find and rescue the character on Gallowdark.
Where: 
Gallowdark
Once unlocked, buy for 600 gold.
Or type r-vr in the Secrets menu.