Billbergia 'Darth Vader' is a cultivar of Billbergia 'La Noche' x 'Domingos Martins' by Lisa Vinzant. Registered in 1997. It is such a great plant, with really dark foliage and white/silver streaks and spots. It also has a the classic Billbergia flower spike with bright red bracts and purple flowers.
Here is one fresh, healthy offset. Grown in the UK.