Trainers that bring Helioptile to places without much sunlight should be prepared to let them bask longer than usual in artificial light sources, or bring high-calorie snacks.

Some Heliolisk absorb so much sunlight when extending their collar that it actually hurts. During these times, Heliolisk glow bright yellow and fires off Thunders so powerful they sear through rubber. Heliolisk won’t leave the sun on its own, so it’s up to its Trainer to find shade.