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His first appearance was in 1991's Street Fighter II, where he was one of eight playable characters, along with Ryu, Ken, Chun Li, etc. Blanka's backstory is that he was once human, but after a plane crash in Brazil, he mutated, resulting in his green coloring and ability to generate electricity.
In addition to SNK vs. Capcom, Blanka appears in some Capcom crossover games. The character has appeared in other media adaptations as well as an animated film, a live-action film, an animated television series, a comic book, and a manga series.

The Rolling Attack and Electric Thunder are two of Blanka's powerful special moves, which make his enemy find it difficult to get close to him and have an ability to move quickly.
This character focuses on aggressive movement and a variety of confusing mind games, combined with set play in the corner. His special move allows him to advance rapidly or force his opponents to guess what he's going to do next, which he can use to his advantage by overwhelming them with choices.

Reference: Wikipedia

Characters Tutorial

Learn how to use Blanka quickly. Thank you to Azu's for sharing the instructional video. More Blanka from SF6.