Here are some post-apocalyptic names fitting a strong, confident, and brave male character, categorized for different stylistic preferences:

Strong & Brutally Simple:

• Rexton
• Kael
• Ragnar
• Talon
• Rhys
• Magnus
• Grim
• Stone
• Breaker
• Ryker

Slightly More Evocative:

• Ironheart
• Stormbreaker
• Asher Vance
• Jaxon Thorne
• Cole Blackwood
• Damon Steel
• Roric Grimstone
• Wolfbane
• Shadow Walker
• Viper

Names with a hint of a past civilization:

• Arthur "Art" Pendragon (evokes a fallen kingly lineage)
• Cassian Valerius (hints at Roman strength)
• Lysander (Greek origin, suggesting intelligence and leadership)
• Atticus (classic, suggesting intellect and resilience)
• Silas Blackwood (combines a classic name with a harsh surname)

Names reflecting a harsh environment:

• Dust
• Cinder
• Flint
• River (suggesting survival skills)
• Hawkeye
• Nightshade

Names with a touch of mystery:

• Wraith
• Renegade
• Nomad
• Ghost
• Shadow

Combinations:

Consider combining elements from different categories to create a truly unique name. For example: "Stoneheart," "Talon Blackwood," "Ragnar Nightshade," or "Viper Thorne."

Remember to consider the overall tone and style of your post-apocalyptic world when making your final selection. The best name will depend on the specific details of your story.