Stellaris add_trait_leader command

This command adds <span class="parameter parameter-primary">Trait ID</span> to <span class="parameter parameter-primary">Leader ID</span>. To view all trait IDs, enter only the <span class="parameter parameter-primary">Leader ID</span>.
Command syntax
add_trait_leader <span class="parameter parameter-primary">Leader ID</span> <span class="parameter parameter-primary">Trait ID</span>
Example
add_trait_leader 1 leader_trait_gale_speed
How to open the console in Stellaris
Press the ~ / ` key to open the command console. This key is located at the top left of the keyboard, usually under the F1 or ESC key. Type the command and press the Enter key.