The Super Rod allows the player to fish for Pokémon in bodies of water. It allows the player to encounter wild Pokémon that are at a higher level than those found using the Old Rod or Good Rod.
Red obtained a Super Rod from the Silence Bridge Fishing Guru in File 3: Giovanni. Soon after obtaining it, he was seen using it to capture himself a Psyduck.
The Super Rod was introduced as a Trainer card in the Pokémon Trading Card Game during the English Neo Series (the Japanese Neo Era). It was first released in the Japanese Gold, Silver, to a New World... expansion and the English Neo Genesis expansion, with artwork by Keiji Kinebuchi. It let a player flip a coin. If heads, the player could put an Evolution card from their discard pile into their hand. If tails, the player could put a Basic Pokémon into their hand instead. Super Rod was later reclassified as an Item card during the English Black & White Series (the Japanese Black & White Era) with a completely different effect. Now, it let players shuffle 3 in any combination of Pokémon and Basic Energy cards from their discard pile back into their deck. During the Scarlet & Violet Series (the Japanese Scarlet & Violet Era) the card received a slight text change to include the phrase up to, in order to give players the option to take fewer than the maximum number of cards.
Trivia
The Super Rod is the only fishing rod that is obtainable in Generation V. The Old and Good Rods, while still existent in the game's programming, cannot be obtained without hacking and cannot be used; if hacked in, they can be held by a Pokémon unlike legitimate Key Items.