Resident Evil 0 rebecca and Billy: partner commands and ability differences
Choose the right character for herbs, chemicals, heavy objects and dangerous corridors.
Edition covered
The original Resident Evil 0 campaign and puzzle rules. All pictures show Capcom’s HD remaster on PC and are labeled accordingly. Remaster-only Wesker Mode is outside this original campaign guide.
Use Rebecca for mixing tasks
Rebecca can combine herb-related items and use her chemical mixing set. Give her ingredients before a puzzle requires them. Billy can use healing items but cannot perform Rebecca’s herb-mixing role.
| Task | Rebecca | Billy |
|---|---|---|
| Mix herbs | Can combine herb-related items | Cannot perform herb mixing |
| Mix chemicals | Uses the mixing set | Does not replace Rebecca’s set |
| Heavy object puzzle | May lack the required strength | Can push certain large objects |
| Combat resilience | More vulnerable | Stronger combat choice |
Use Billy for heavier physical work
Billy is stronger in combat and can move certain heavy objects. He is a practical choice for a dangerous newly opened corridor when equipment is otherwise equal. His strength does not remove the need for healing or careful ammunition use.
| Setting | Behavior | Useful situation |
|---|---|---|
| Team | Partner follows the main character | Traveling together |
| Solo | Characters move independently | Two-position puzzle |
| Attack | Partner fires automatically | A planned shared fight |
| Idle | Partner does not attack automatically | Conserving ammunition or holding position |
Set movement and attack behavior separately
Team or Solo changes whether the partner follows, while Attack or Idle changes automatic fighting behavior. Check both settings before a puzzle. Leaving the partner idle with a valuable weapon can also avoid unwanted ammunition use.
Respond when the partner is in danger
Both characters must survive. A separated partner may call for help when attacked, and ignoring that call can end the run. Leave a partner in a cleared room when possible and check health after every substantial encounter.
Both characters must survive.
References
| Reference | Website |
|---|---|
| Resident Evil 0 publisher/storefront | store.steampowered.com |
| Original in-game Player’s Manual 1 transcript | www.evilresource.com |
| Original in-game Player’s Manual 2 transcript | www.evilresource.com |
| Original GameCube puzzle walkthrough | www.neoseeker.com |