Toho vs Tsuburaya
Connection:
Both are arch-rivals to the protagonists (King Ghidorah to Godzilla and Zetton for Ultraman), each returning on multiple occasions
Both are alien Kaijus who possess power of electricity
Both have served aliens as weapons to invade Earth
Both are among the most powerful kaiju in their respective series, on some occasions it takes multiple opponents to take them down
Both come from tokusatsu themed franchises (Toho and Tsuburaya respectively)
