Backpacks in Mecharashi are one of the most essential equipment pieces for enhancing your pilot’s performance. With the new Rank 2 Backpack system and upcoming Rainbow Backpacks, understanding what to craft and which combinations matter is more important than ever — especially for free-to-play players who can’t rely on duplicate drops.
This guide breaks down how backpack crafting works, which jammers/amplifiers to use, and how to prepare your Rank 2 backpacks for the powerful Rainbow Backpack upgrades coming soon.
How Backpack Crafting Works
When crafting higher-rank backpacks (like Gold Rank 2), you combine various components:
Base Backpack (Bottom Left):
The primary item you’re upgrading — for example, Accelerator or Repair Backpack.
Jammer or Amplifier (Bottom Right):
Determines the side effect your crafted backpack gains.
Jammer = Defensive/Utility Side Effects
Amplifier = Offensive/Support Side Effects
Three Purple Backpacks (Top Slots):
Used as crafting materials. These can be any backpacks, though rare ones should be saved.
Avoid using rare materials like Power Banks, Repair Manipulators, or Ammo Crates unless you have duplicates — they are crucial for future rainbow upgrades.
Preparing for Rainbow Backpacks
Rainbow Backpacks are the final evolution tier, combining Rank 2 backpacks with special blueprints and high-tier materials from endgame content. Each Rainbow Backpack will inherit:
Its base backpack’s core effect, and
A secondary effect from the jammer or amplifier used in its Rank 2 crafting.
Below are examples and how to prepare for each type.
Example 1 – Rainbow Accelerator Backpack
Future Combo:
- Base: Accelerator Backpack
- Side Effect Source: Gold Armor Jammer
Crafting Tip:
To prepare for the Rainbow Accelerator, first craft a Rank 2 Accelerator Backpack using an Armor Jammer.
This combination provides superior movement bonuses for SD and heavy-type pilots later on.
In Crafting Menu:
- Bottom Left → Accelerator Backpack
- Bottom Right → Armor Jammer
- Top Three → Any Purple Backpacks (avoid key ones like Ammo or Repair types)
This backpack is one of the best mobility options for upcoming content.
Example 2 – Rainbow Repair Backpack
Future Combo:
- Base: Repair Backpack
- Side Effect Source: Attack Jammer
Craft a Rank 2 Repair Backpack using an Attack Jammer.
This future-ready version benefits Mechanist-type pilots, improving both sustain and offensive capability.
Why it’s important:
The Attack Jammer variant enhances survivability while scaling offensive stats, making it a staple for units like Emily or Mary in late-game challenges.
Example 3 – Rainbow Ammo Crate Backpack
Future Combo:
- Base: Ammo Crate
- Side Effect Source: Attack Amplifier
The Rainbow Ammo Crate is one of the strongest upcoming utility backpacks.
It grants access to Quick Reload Command, essentially providing a free reload skill in combat.
This means pilots like Cicero or Elen, who usually spend a skill slot for Reload Command, can now free that slot for another ability — dramatically improving flexibility.
Crafting Tip:
Before the rainbow update, prepare a Rank 2 Ammo Crate using an Attack Amplifier.
Best Current Rank 2 Backpack Combos
If you already have duplicate backpacks and want something useful now, here are the recommended Rank 2 combos that remain strong long-term:
| Backpack | Combine With | Recommended For | Reason |
|---|---|---|---|
| Accelerator + Armor Jammer | Jammers | Heavy SD Pilots (Camilla, Honk) | Core for Rainbow Accelerator |
| Repair + Attack Jammer | Jammers | Mechanists (Emily, Mary) | Prepares for future rainbow version |
| Ammo Crate + Attack Amplifier | Amplifiers | Shooters (Cicero, Elen) | Unlocks future Quick Reload Command |
| First Strike + Armor Crate | Any | Tacticians | Excellent early combo and stays useful |
| Power Bank + Attack Amplifier | Amplifiers | Offensive builds | Great for AP sustain |
Even before rainbow upgrades arrive, these builds deliver good performance across all content.
Required Materials for Rainbow Crafting
Once the update arrives, Rainbow Backpack crafting will require the following:
Bottom Left:
Rank 2 Backpack (with correct jammer/amplifier side effect)
Bottom Right:
Any Gold Rank 2 Backpack (material)
Top Three:
Gold Rank 1 Backpacks (any type)
Special Material:
Rainbow Blueprints & Unique Components — obtained from Armed Conquest (unlocks at level 70).
Endgame Material Source — Armed Conquest
Armed Conquest is one of Mecharashi’s major endgame systems.
It’s where players will gather unique weapon parts, blueprints, and Rainbow Backpack materials.
Key Facts:
- Unlocks at Level 70
- Contains 4 Boss Battles
- Offers no RNG for blueprints — rewards are guaranteed from weekly completions
- You can fight all bosses in one day, or do one per day for convenience
- You can borrow strong mercenaries daily to help clear stages
When you first start, it’s smarter to tackle one boss per day to maximize assistance and guarantee clears.
Recommended Pilots to Prepare
Armed Conquest requires at least 12 pilots, as later phases use multiple squads.
Based on the creator’s advice, these are the best early investments:
- Mary
- Emily
- Winston
All three are highly efficient across early and endgame challenges, offering solid synergy for both offensive and defensive setups.
Rainbow Backpacks are the future of gear progression in Mecharashi.
By crafting the right Rank 2 combinations now, you can save enormous amounts of resources and time later.
Even though F2P players might face drop limitations, careful planning with jammers and amplifiers ensures that when the Rainbow tier arrives, you’ll already have the ideal foundations ready to upgrade.