Best robot in Steel Fighters
No strongest robot is established by this site. Compare the actual stats and performance of builds you can make now. A reported set bonus is one input; part levels, upgrades, reforge rolls and your activity also affect the choice.
Evidence: Sportskeeda's Update 1 report describes Perfect as +10% stats for six parts from one robot. This is a secondary report of developer notes, not a direct official statement captured here. An upgrade panel in Ricoko's video shows Health, Attack, Defense and Critical. No controlled build test has been performed by this site.
What can be recommended now?
Build a usable robot from the parts you own, then compare its displayed values with a matching-family alternative. Six slots are documented in gameplay: head, torso, two arms and two legs.
A +10% set bonus does not establish that lower-level matching parts beat stronger mixed parts. Confirm the Perfect indicator in your client; whether equal part levels are also required and how bonuses combine are not established here.
Choose a comparison for the job
These are editorial test priorities, not named-family recommendations. Seeing a family in the Index does not demonstrate a role or relative strength.
| Activity | What to compare | Useful result to record |
|---|---|---|
| Boss fight | Attack, Critical and survival against the same boss | Clear time and failed attempts |
| Arena climb | Attack with enough Health and Defense to finish | Same-floor success rate and remaining health |
| Junkyard route | Survival and delivery pace on a fixed route | Delivered Scrap per minute |
| PvP | Builds against the same opponent and rules | Wins, losses and opponent configuration |
Budget decisions before chasing a family
Use free rewards and existing parts before buying a pack for an untested build. Compare the displayed improvement and resource cost of your next upgrade. Availability and price data are incomplete, so no cheapest family is named.
A practical test keeps floor, title, rebirth count, part levels and temporary boosts consistent. Record ten attempts per candidate and include failures. Ten attempts is a proposed method, not a completed dataset or a guarantee of statistical certainty.
For a finished comparison, record the date, all six parts, upgrade level, Perfect status and reforge values. The tier-list page tracks what evidence is still missing rather than assigning unsupported ranks.
Keep going
Checked 2026-10-25. Sources and evidence grades are on Sources.
Questions
Which robot is strongest?
This site has no controlled data identifying one. Compare current builds at the same floor and with the same boosts before spending resources.
Are matching parts always better?
No such conclusion is supported. The reported +10% Perfect bonus must be weighed against actual part levels and final stats.
Can I mix families?
The official description advertises mixing parts. The reported Perfect condition requires matching parts, so check the in-game indicator on a mixed build.