Mega Man X3: Zero Walkthrough
Stage Timestamps:
01:09 Hunter Quarters
05:04 Gravity Beetle (Airborne Aircraft Carrier)
08:17 Tunnel Rhino (Quarry)
14:21 Blast Hornet (Weapons Factory)
19:03 Volt Catfish (Power Control Center)
23:38 Blizzard Buffalo (Frozen Town)
27:11 Neon Tiger (Safari Park)
31:35 Crush Crawfish (Shipyard)
38:26 Toxic Seahorse (Giant Dam)
43:56 Doppler Stage 1 (Press Disposer)
47:30 Doppler Stage 2 (Volt Kurageil)
50:53 Doppler Stage 3 (Dr. Doppler)
59:57 Final Stage (Sigma)

All Bosses Timestamps:
03:53 Maoh the Giant
07:20 Gravity Bettle
11:11 Hell Crusher
12:17 Tunnel Rhino
15:18 Shurikein
16:40 Byte
18:00 Blast Hornet
22:24 Volt Catfish
26:08 Blizzard Buffalo
29:06 Worm SeekerR
30:30 Neon Tiger
32:51 Bit
34:26 Vile Armor
37:28 Crush Crawfish
40:14 Hotareeca
41:16 Toxic Seahorse
44:38 REX2000
46:44 Press Disposer
48:14 Mosquitus
50:10 Volt Kurageil
58:48 Dr Doppler
1:0:57 Sigma
1:1:51 Kaiser Sigma (Final Boss)