Inaros' tomb isn't just a gameplay mechanic, it's where he came from. And Wukongs Defy is literally to defy death. Lore hasn't been given on individual warframes except Mirage, Chroma, Limbo and Mesa. EDIT: Oh, and Inaros.

Can I have citations?

For? All those warframes, Inaros, Wukong, what?

[quote]For? All those warframes, Inaros, Wukong, what?[/quote] Inaros, and Wukong

Upon losing all of his health, Wukong is healed up to 45% / 50% / 65% / 75% of his maximum health and gains invulnerability for 2 / 3 / 4 / 5 seconds. As a consequence, Wukong loses 50% / 40% / 30% / 25% of his current energy. Wukong, Defy. Source- warframe wiki on losing all health, instead of the standard Bleedout state like other Warframes, Inaros enters an immobile sarcophagus that siphons health from nearby enemies and allies that Inaros aims at. Enemies being siphoned will be pulled towards Inaros, and the siphoned health goes to a meter that when filled, allows Inaros to automatically resurrect himself. Otherwise, he can be revived by other players as normal. However, note that Inaros is still in danger of bleeding to death if there is no enemy or ally nearby to drain health from, or if Inaros is unable to fill his meter before his bleedout time expires. Inaros, Sarcophagus. Source- Warframe Wiki.

[quote]Upon losing all of his health, Wukong is healed up to 45% / 50% / 65% / 75% of his maximum health and gains invulnerability for 2 / 3 / 4 / 5 seconds. As a consequence, Wukong loses 50% / 40% / 30% / 25% of his current energy. Wukong, Defy. Source- warframe wiki ------- Isn't that just gameplay? I mean it doesn't mean it could withstand planet destroying power. Armor lock grants invulnerability in Halo Reach but wouldn't withstand a Death Star blast. ------- on losing all health, instead of the standard Bleedout state like other Warframes, Inaros enters an immobile sarcophagus that siphons health from nearby enemies and allies that Inaros aims at. Enemies being siphoned will be pulled towards Inaros, and the siphoned health goes to a meter that when filled, allows Inaros to automatically resurrect himself. Otherwise, he can be revived by other players as normal. However, note that Inaros is still in danger of bleeding to death if there is no enemy or ally nearby to drain health from, or if Inaros is unable to fill his meter before his bleedout time expires. Inaros, Sarcophagus. Source- Warframe Wiki.[/quote] ------- Their is nobody around him in this case.

Alright then, Inaros is out. But Wukong still stands.