Hmmmm....
Two giant beings who tower over other residents: Both are massively taller than everyone else in their worlds. White Diamond dwarfs the other Diamonds and Gems; Tenna is over twice Susie's height (and shrinks when insecure, adding emotional depth).
Extreme white light motifs: White Diamond embodies pure white radiance, with blinding light powers and a flawless, glowing aesthetic. Tenna, as a CRT TV Darkner, ties into bright screens/static/white glows (old TVs often flash white), and fan theories pre-Chapter 3 even speculated "white" themes for him.
Extremely terrible bosses to underlings, yet earn respect in the end: White is controlling and dismissive (mind-controlling her court), but reforms and gains genuine respect. Tenna rules the TV World harshly, forcing entertainment/shows on subjects like the Addisons, but his charisma and vulnerability lead to loyalty/redemption arcs.
Extremely childish motives: White's perfectionism stems from deep insecurity and a tantrum-like refusal to accept flaws. Tenna's drive for constant attention/entertainment comes from abandonment issues (as an old family TV), making him petulant and ego-driven.
Rather different art style from the rest of the cast: White shifts to a unique, starry/background-like render initially. Tenna is fully pre-rendered 3D in a 2D pixel game, standing out dramatically with flashy, animated poses.
Extremely powerful, but power depends on motivation: White's abilities wane when her ego cracks. Tenna's size, strength, and showmanship fluctuate with his mood/confidence (shrinking when down).
Can be defeated by talking them down: Classic Toby Fox/Rebecca Sugar style—both bosses are ultimately pacified through empathy/dialogue, revealing their insecurities rather than pure combat.
Very bombastic: White's dramatic speeches and flair; Tenna's over-the-top game show host energy, complete with voiced lines and exaggerated animations.
Obsessed with the main protagonist: White fixates on Steven (as Pink Diamond's "replacement"). Tenna has a complex, personal tie to Kris (from the Light World TV watching their family), leading to obsession in the Dark World.