This card being a Level 6 monster is likely a reference to platinum often being represented as a precious metal of higher importance than gold or silver, represented by "Goldd" and "Sillva" respectively, both of which are Level 5 monsters.
This card's Chinese name, 鉑提納, is a combination of 鉑 ("platinum") and 提納 tínà (transcription/transliteration of チナ china as in its Japanese name ラチナ Rachina, or tina as in the Spanish word platina).
This card has the highest DEF of all "Dark World" monsters.