| Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'American Monster' | Giant | Blue/Green | | | Hybrid | Near-White | June into July | Wade, Van | --NR-- |
| 'Backyard Monster' | Large | Med-Green | Marginal | White | Unknown | Near-White | June | Schwarz, Jim | .2007 |
| 'Cookie Monster' | Large | Yellow | | | Hybrid | | | Kuk, Bob | --NR-- |
| 'Giantland Blue Monster' | Giant | Blue/Green | | | Unknown | | | Miller, Jeff | --NR-- |
| 'Green-eyed Monster' | Giant | Dark-Green | | | Unknown | Near-White | June into July | Simpers, Lucille | --NR-- |
| 'Lochness Monster' | Large | Yellow | | | Nat-Sport | Near-White | June | Brill, Kirk | --NR-- |
| 'Mommy's Little Monster' | Medium | Blue/Green | | | Hybrid | | | Stadden, Josh | --NR-- |
| 'Monster Babe' | Giant | Blue/Green | | | Hybrid | Pale-Lavender | | Minks, Eldren & Malloy, Alex | .2000 |
| 'Monster Ears' | Medium | Med-Green | | | Nat-Sport | Near-White | July into August | Heemskerk, Gerardus | .2014 |
| 'Moon Monster' | Large | Blue/Green | | | Unknown | | June into July | Lachman, Wm & Eleanor & Walek, Kevin | .2009 |
| 'Sea Blue Monster' | Large | Blue/Green | | | Hybrid | Near-White | June into July | Seaver, Mildred | .2009 |
| 'Sea Monster' | Large | Med-Green | | | Hybrid | Near-White | June into July | Seaver, Mildred & Walek, Kevin | .2009 |
| 'Simper's Green Eyed Monster' | | - | - | - | Duplicate | - | - | Duplicate Name | |
| 'Soules Monster' | Giant | Blue/Green | | | Unknown | | | Soules, Marjorie | --NR-- |
| 'Swamp Monster' | Large | Dark-Green | | | Hybrid | Near-White | June | Lachman, Wm & Eleanor | .1991 |
| 'Wood Monster' | Giant | Med-Green | | | Unknown | | July into August | Woods, Doyle. & Schulz, Ed | .2011 |
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