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# Heroes' Upgrading
Upgrading heroes is essential and brings great benefits to owners, including increased strength and gTHC Battles.
**Heroes' upgrading benefits:**
* Increase hero stats by +1.5% at each level
* Increase gTHC Battles and Win bonus, as shown on the following table
### **Cost to Upgrade**
Upgrading heroes require power points and gTHG by Hero Rarity.
**NOTE**: **gTHG price fluctuates with floating THC/THG exchange rate**. The price shown in the table below is based on the sample exchange rate of **0.017**
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