Gundam and Giant Robots in South Korea
Pirated Gundam products (videos, toys, etc.) has always been very popular in South Korea. In 2005, when Sunrise, which owns the rights to Gundam, tried to register "Gundam" as a trademark in South Korea, they were turned down by the South Korean agency.
Naturally, Sunrise appealed to the Korean courts. However, Sunrise lost the appeal for the incredible reason that "In Korea, 'Gundam' is a general term for robots which appear in anime" (韓国では『ガンダム』とはアニメに登場するロボットの一般名詞である)!
The "Gundam Trial" was so shocking to Japanese people that it had come to be seen as an urban legend. However, it was proven that it was no joke, but an actual trial. For more info, see here or here (創通＝Bandai).
When "super robot" anime and manga were gaining momentum during the 80's, the popular shows weren't as easily accessible in South Korea as they are today. Surpassing even the modern fansubbers, people in South Korea began releasing Japanese animations as "Original South Korean Products" under different names, many of which were televised by Korean TV stations. Below are some examples of the "Original Korean Products" and their Japanese counterparts:
Galactic Dark Knight 1979
"New Gundam Series"
...and Tekon V
Last but not least, One Piece!