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Available both stock/untouched and Heat Rolled with Progressive Pressure - choose your preference during checkout!
Anonymous and Monsta have done this before, and the first one didn’t sit on shelves long! The 2026 Anonymous INSIDIOUS is the follow-up to THE BLUEPRINT: a limited edition USA/ASA slowpitch bat that wears Anonymous styling over Monsta’s barrel technology. "Two Brands. One Mission.’" is how they put it. The look is pure Anonymous, a black bat with a grinning red mask dripping down the barrel and INSIDIOUS in jagged red lettering below it. What makes this release different from most collabs is that it isn’t one bat; it comes in three configurations, so an end-load power hitter and a midload gap hitter can both swing the same graphic and get a bat that fits.
Under the paint is Monsta MX Technology, Monsta’s advanced composite construction, built for barrel performance and responsiveness. It’s engineered specifically around the 52/300 softball used in USA Softball play, which matters because a bat tuned for that softer ball gets the most out of it. Then you pick your platform! The 25 oz KOD carries a full 1 oz end load for power hitters who want maximum barrel momentum through the zone. The 25 oz Midload Torch centers the weight further down the barrel for a blend of power, balance, and swing control. The 26 oz Midload Torch adds mass while keeping that same smooth, controlled swing. The INSIDIOUS is approved for USA Softball (formerly ASA) only. It is not a senior softball bat, and harder balls such as 44/375s can damage the barrel and shorten its life. It’s sold without a manufacturer warranty.
Three configurations on one page is where shoppers get stuck, and it’s where we can help. LongballBats.com has been the Bat Performance Experts since 2016, offering slowpitch players more than 100 years of combined baseball and softball experience! Our friendly staff has gotten our hands on tens of thousands of bats over the years, including plenty of Monsta barrels. We carry the full lineup of Anonymous slowpitch bats and one of the largest selections of the brands we sell, so we can tell you how the KOD and Torch versions of the INSIDIOUS differ in the hands, and whether THE BLUEPRINT or another USA/ASA bat fits you better. Tell us what you swing now and what league you play in. Contact us and we’ll point you to the right one!
- Anonymous and Monsta Collaboration: Monsta’s proven technology with Anonymous Athletics’ signature style
- Sport: Slowpitch Softball
- Brand: Anonymous Athletics
- Barrel Diameter: 2-1/4 inch, the largest allowed per stamp
- Certification: Approved for USA Softball (formerly ASA) leagues and tournaments
- Monsta MX Technology: Monsta’s advanced composite construction, built for barrel performance and responsiveness
- Built for 52/300 Softballs: Engineered around the softer ball used in USA Softball play
- 25 oz KOD (1 oz End Load): For power hitters who want maximum barrel momentum
- 25 oz Midload Torch: A blend of power, balance, and swing control
- 26 oz Midload Torch: More mass with the same smooth, controlled swing
- Ball Restriction: Do not use with harder balls such as 44/375s, which may damage the barrel
- Colorway: Black with red mask graphics and red lettering
- Year Released: 2026
- Warranty: None. All 2026 INSIDIOUS bats are sold without a manufacturer warranty
- Adding our Heat Roll with Progressive Pressure to your order may cause decertification, check with the governing body of your league for clarification
Manufacturing tolerances, performance considerations, and grip weight may cause variations from the listed weight.
QUESTION: Should I order this bat stock/untouched or Heat Rolled with Progressive Pressure?
ANSWER: If you order your new bat Heat Rolled with Progressive Pressure, it will be delivered to you completely and evenly broken in. This process adds 20-40ft of distance to your solid hits, increases consistency, improves durability and adds 2-3 business days of lead time to your order. If you plan to use the bat in an official game or event, please verify the legality of our process with your league or sanctioning body before use. We (LongballBats.com) do not encourage the use of a Heat Rolled bat in any game or event where it is against the rules. Click here for details about our process!
QUESTION: Should I get the KOD or the Torch version of the INSIDIOUS?
ANSWER: It comes down to where you want the weight. The KOD has a 1 oz end load, so the mass sits out at the end of the barrel and the bat carries through the ball with authority. That’s a power hitter’s setup, and it rewards a strong, quick swing. The Torch is a midload, with the weight centered more in the middle of the barrel. It feels lighter to get moving and easier to control, while still hitting with more behind it than a balanced bat. If you live for the long ball and have the bat speed, go KOD. If you hit gaps, place the ball, or just want a smoother swing, go Torch.
QUESTION: Which Torch weight is right for me, 25 oz or 26 oz?
ANSWER: Same bat, one ounce apart. The 25 oz is the faster of the two and the safer pick if you’re moving over from a balanced bat or if your bat speed is what creates your distance. The 26 oz gives you more mass at contact without changing the feel of the swing, which suits a bigger, stronger hitter who doesn’t lose any speed with the extra ounce. When in doubt, go lighter. A bat you can get through the zone on time will always outhit one that’s a little late.
QUESTION: Is the Anonymous INSIDIOUS legal in USSSA or senior softball?
ANSWER: No. It’s approved for USA Softball (formerly ASA) only. That rules out USSSA, NSA, and ISA leagues, and Anonymous is clear that this is not a senior softball bat. The other thing to know is about the ball: the INSIDIOUS is built for 52/300 softballs. Harder balls like the 44/375 can cause barrel damage and cut the life of the bat short, and with no warranty, that one’s on you. If your league throws 44/375s, this isn’t your bat, and we can steer you to one that is. Just call us!
QUESTION: Is the INSIDIOUS an Anonymous bat or a Monsta bat?
ANSWER: Both, and that’s the point. It’s a collaboration between Anonymous Athletics and Monsta Athletics, the second after THE BLUEPRINT. The technology is Monsta’s: MX Technology in the barrel, with the KOD and Torch names coming from Monsta’s own USA/ASA platforms. The identity is Anonymous: the artwork, the name, and the limited edition release. So if you already know how a Monsta swings, you know roughly what to expect here. You’re just getting it in a design you won’t find on a standard Monsta!
