This card has great synergy with an "Ojama" Deck; use the effect of "Ojama Red" to bring out two "Gantetsu". With "Ojama Country" on the field it can become a 2600 attacker at the cost of two 0 ATK monsters.
If the following is used: "Ojama Red", "Ojamagic" (to get the cards to Summon), "Ojama Delta Hurricane!!" and "Ojama Country" it would be possible to clear the field, then attack for 1800 (the base ATK of "Gantetsu") + 1800 (the second base ATK of "Gantetsu"), + 1000 (the base ATK of "Ojama Red"), + (the effect bonus of "Gantetsu") + 400 (the second effect bonus of "Gantetsu") x 3 (you have 3 monsters), for a total of 7000 damage. If the second effect of "Ojama Country" is used to Summon an "Ojama" from Graveyard, this becomes an OTK.
This card can be helpful in a "Gusto" Deck. It is very likely "Winda, Priestess of Gusto" and "Gusto Squirro" would be on the field as "Winda" would usually not be attacked and "Squirro" has high DEF. The ATK boost is very helpful as most of the Gusto monsters do not have high ATK.
You can use the effect of "Deep Sea Diva" to Special Summon another one from the Deck to Summon this card. "Rescue Rabbit" also can be used to Summon this card, by searching for 2 Level 2 Normal Monsters from your Deck.
You can Special Summon 2 copies of "Quillbolt Hedgehog" while you control a Tuner monster to Xyz Summon this card. Also, since "Quillbolt" doesn't get removed from play if removed as an Xyz Material, you can summon another "Gantetsu" after using the destruction-prevention effect twice, making for an effective wall that boosts your monsters attacks, and doubles up as a target for effects such as that of "Scrap Dragon".
"Plaguespreader Zombie" also works well with "Quillbolt Hedgehog", as it provides a Tuner to Summon a "Quillbolt", and is Level 2 itself (so you need only 1 "Quillbolt"). This way you don't need a Tuner on the field initially, but you need to return a card from your hand to the top of your Deck.