For the most part, I think 98% of them were found in the industrial hubs closest to Terra, and the two larger hubs found about mid way through Steiner and Kurita space.
Please post where you might have found your favorite hero mechs. I'll update as I play through my Steiner toon.
Legend - DC = Draconis Combine, FWL - Free Worlds League, FS - Federated Suns, LC - Lyran Commonwealth, CC - Capellan Confederation, Terra = Hub that has Terra in the center
---Light
Locust LCT-PB
Commando COM-TDK (DC)
Javelin JVN-HT (FS)
Spider SDR-A
Urbanmech UM-K9 (DC)
Urbanmech UM-SC (DC)
Firestarter FS9-E (FWL and LC)
Firestarter FS9-FS
Jenner JR7-O
Panther PNT-KK
Raven RVN-H
Wolfhound WLF-GR
---Medium
Assassin ASN-DD
Cicada CDA-X5
Vulcan VL-BL (DC)
Blackjack BJ-A
Phoenix Hawk - PHX-KK
Vindicator VND-1SIB
Crab - CRB-FL
Enforcer ENF-GH (FWL)
Hunchback HBK-GI (DC and LC)
Trebuchet TBT-LG
Centurion CN9-YLW (FWL)
Dervish - DV-FR
Griffin GRF-1E
Griffin GRF-AR
Shadow Hawk SHD-GD
Kintaro KTO-GB (FS)
Wolverine WVR-Q (FWL)
---Heavy
Dragon DRG-Fang (DC, CC, and LC)
Dragon DRG-Flame (FS)
Quickdraw QKD-IV4 (LC and CC)
Rifleman RFL-DB
Rifleman RFL-LK
Catapult CPLT-J (DC and FWL)
Catapult CPLT-BB (DC)
JagerMech JM6-FB (DC and CC)
Thunderbolt TDR-5S-T (DC)
Archer ARC-T (Terra and CC)
Cataphract CTF-IM (FS)
Grasshopper - GHR-MJ
Warhammer WHM-BW (Terra)
Black Knight - BL-P-KNT
Marauder MAD-BH2
Orion ON1-P (DC)
---Assault
Awesome AWS-PB
Charger CGR-N7 (DC)
Victor VTR-DS
Zeus ZEU-SK
BattleMaster BLR-1GHE (DC)
Stalker STK-M
Cyclops - CP-S
Highlander HGN-HM
Mauler MAL-KO (FWL)
Banshee BNC-LM (LC)
Banshee BNC-SR (LC)
Atlas AS7-BH - (Terra & DC)
Atlas - AS7-KR - (FWL)
King Crab KGC-KJ (Terra)
Edited for ones I found in my latest play thru, and added Capellan Confederation. It is really looking more like most are just RNG. Really annoying when it shows up on a planet you just came off.
Edited by KodiakGW, 28 October 2021 - 12:10 PM.