Example: There are a significant number of fish who have an entirely defined pre-flop range, and who ALSO apply said pre-flop range to all other players even with clear evidence to the contrary - the only adjustment they make is based on amount of aggression, but it still falls into their rubic - put it this way; they probably are 20/5 (I don't have exact numbers for a VPIP for the Hellmuth Hand range, but I'm guessing it's 25); folding certain Hellmuth hands OOP, and in their minds, the most extreme tight-passive is like 15/1, the most extreme tight-aggressive is 15/15, the most extreme loose-passive is like 25/5 (the extra 5 coming from playing a few more Hellmuth hands OOP), and the most extreme loose-aggressive is 25/25.

For those who don't know, Hellmuth Hand range refers to a wallet-sized card that they sell at every Vegas gift shop that claims to be a easy-to-understand and useful guide for beginners on how to play poker correctly, as told by Phil Hellmuth, World Series of Poker Champion. The card includes a basic range of 88+, AK/AQ/KQs OOP, same hands + any two broadways and any suited Ax IP. Said fish pretty much stick to this range and in all non-limped pots, apply the same range to their opponents, period, and engage in absolutely ZERO amount of post-flop anaylsis in regards to bet-sizing/board-texture/etc - it's all pre-flop hands and nothing else; they know that people limp with much wider, but once there's been A raise, then anything outside this range is completely bizarre and clearly indicative of horrible play.

And as a result, they are very suspectable to stacking off with AK on a K44 board, but you also will almost never be able to get them off of said AK on a K6543 board, no matter how well you represented the 7. But said fish are EASILY bluffable off of other hands if you're telling a story that's based on having a Hellmuth hand pre-flop; they will fold JJ on an A-high board if you sell the story right (as in represent AQ by playing it in the way the fish would play it; the most glaring example would be Fish opens for $12 at 1/2, you 3bet to 30, fish calls, flop is all rags, fish checks, you check behind, turn A, fish bets out 30, you raise here, fish is going to go "GODDAMNIT HE HAS AK and spiked an A on the turn" and fold.

Hence the fish "making a stand" with 54 on a QQ5 board. I don't know if the fish in question is this type of player, but it certainly fits the bill. The fish has his ******ed, set-in-stone logic as to hero's hand range, and even though he's facing a maniac, HE STILL analyzes the hand within his rubric, so to him, that hero is a maniac means he just is super aggro with said hellmuth-hand range. So dumb fish villain probably convinced himself that given the board having two Q's, and given that (in dumb fish villain's mind), maniac will play any two broadways super-aggro no matter what the board texture is on flop/turn/river, the dumb fish villain concludes that his 54 is good on a QQ5 board vs. a range of TT+, any two broadways; heck that may actually be mathetmatically correct if someone wants to check)

For those still reading - the easiest way to ID these guys is to listen to their post-hand comments when someone wins a significant pot at showdown with cards well outside the Hellmuth hand range that ended up becoming relative monsters given the board; they're the ones who always scoff "64s? You play that trash for $20?" after calling a pot-sized river bet on a K53-2-T board or "How could you call a raise pre-flop with K3o?" after call a raise and then a pot-sized bet on turn and river with AQ on a Q33-x-x board, deducing that you must have flopped nut flush draw and therefore can't have any other hand that would bet in such a fashion, compeltely ignoring the circumstances that could justify such a call (although admittedly there aren't many to justify K3o in a deep cash game) That's why it's important to listen to their ******ed poker beliefs (and also why it's important to not try to point out the flaws in their logic).