I set their values to false (except angel), that should deactivate them. You can copy the whole line and paste it in your save.
             
3402 = thief
3403 = icewitch
3404 = warrior
3405 = paladin
3406 = firewitch
3407 = angel
3408 = demon
3409 = ghost
3410 = cerise
{\"rid\":3402,\"type\":{\"class\":\"ValueBool\",\"ns\":\"GameCreator.Runtime.Variables\",\"asm\":\"GameCreator.Runtime.Core\"},\"data\":{\"m_Breakpoint\":false,\"m_IsEnabled\":true,\"m_Value\":false}},{\"rid\":3403,\"type\":{\"class\":\"ValueBool\",\"ns\":\"GameCreator.Runtime.Variables\",\"asm\":\"GameCreator.Runtime.Core\"},\"data\":{\"m_Breakpoint\":false,\"m_IsEnabled\":true,\"m_Value\":false}},{\"rid\":3404,\"type\":{\"class\":\"ValueBool\",\"ns\":\"GameCreator.Runtime.Variables\",\"asm\":\"GameCreator.Runtime.Core\"},\"data\":{\"m_Breakpoint\":false,\"m_IsEnabled\":true,\"m_Value\":false}},{\"rid\":3405,\"type\":{\"class\":\"ValueBool\",\"ns\":\"GameCreator.Runtime.Variables\",\"asm\":\"GameCreator.Runtime.Core\"},\"data\":{\"m_Breakpoint\":false,\"m_IsEnabled\":true,\"m_Value\":false}},{\"rid\":3406,\"type\":{\"class\":\"ValueBool\",\"ns\":\"GameCreator.Runtime.Variables\",\"asm\":\"GameCreator.Runtime.Core\"},\"data\":{\"m_Breakpoint\":false,\"m_IsEnabled\":true,\"m_Value\":false}},{\"rid\":3407,\"type\":{\"class\":\"ValueBool\",\"ns\":\"GameCreator.Runtime.Variables\",\"asm\":\"GameCreator.Runtime.Core\"},\"data\":{\"m_Breakpoint\":false,\"m_IsEnabled\":true,\"m_Value\":true}},{\"rid\":3408,\"type\":{\"class\":\"ValueBool\",\"ns\":\"GameCreator.Runtime.Variables\",\"asm\":\"GameCreator.Runtime.Core\"},\"data\":{\"m_Breakpoint\":false,\"m_IsEnabled\":true,\"m_Value\":false}},{\"rid\":3409,\"type\":{\"class\":\"ValueBool\",\"ns\":\"GameCreator.Runtime.Variables\",\"asm\":\"GameCreator.Runtime.Core\"},\"data\":{\"m_Breakpoint\":false,\"m_IsEnabled\":true,\"m_Value\":false}},{\"rid\":3410,\"type\":{\"class\":\"ValueBool\",\"ns\":\"GameCreator.Runtime.Variables\",\"asm\":\"GameCreator.Runtime.Core\"},\"data\":{\"m_Breakpoint\":false,\"m_IsEnabled\":true,\"m_Value\":false}}
Also: (not sure which unit is plantgirl)
3414 = necromancer
3415 = lancer
3416 = plantgirl
{\"rid\":3414,\"type\":{\"class\":\"ValueBool\",\"ns\":\"GameCreator.Runtime.Variables\",\"asm\":\"GameCreator.Runtime.Core\"},\"data\":{\"m_Breakpoint\":false,\"m_IsEnabled\":true,\"m_Value\":false}},{\"rid\":3415,\"type\":{\"class\":\"ValueBool\",\"ns\":\"GameCreator.Runtime.Variables\",\"asm\":\"GameCreator.Runtime.Core\"},\"data\":{\"m_Breakpoint\":false,\"m_IsEnabled\":true,\"m_Value\":false}},{\"rid\":3416,\"type\":{\"class\":\"ValueBool\",\"ns\":\"GameCreator.Runtime.Variables\",\"asm\":\"GameCreator.Runtime.Core\"},\"data\":{\"m_Breakpoint\":false,\"m_IsEnabled\":true,\"m_Value\":false}}