And last but not least, the titular character, Violet! 

Name- Violet (Vi)
Species- Mutant
Abilities- Lines and colours. Lines- blue are life lines, yellow are destiny lines and red are soulmate lines (but not everyone has a red). Colours- like auras, she can see colours around people that reflect their current emotions. 
Relationships- Youngest of the 6 Yachtman kids, twin to Daisy. Best friend to Damian and Taylor. 
Other- Cannot see her own lines and colours. Has committed every Pokémon to memory (circa 2007) but can't pick a favourite.