I think yaklixy’s headcanon about monsters continuing to grow until the age of 30 could be true. During Rayburn Jr’s match against Tentacular, Mark and Lights Out Mcginty refer to both Winnie and Jr as “kids”, which they don’t do with Tentacular. Plus, if this was true, then Tentacular should be around 22-27 years old when judging by his height (18 meters). This was quite fun to experiment with. When i calculated this, i just looked up how fast teenage boys grow during puberty (around 7cm per year) and multiplied it by 8 (around 56cm per year) and these are the results (note! in some cases i either rounded the numbers up or down). P.s in my Rumble headcanon, there’s a 2 year “growth-break”, which means that monsters remain relatively the same size from the age of 16 to 18 before they continue to grow to their final size Yaklixy’s post: https://at.tumblr.com/a/key_live_loIM22jCfY1c0N7G2HnBDcmjDCpTeypJ?alias=yaklixy/un-dadito-3-en-mi-headcanon-los-monstruos-crecen/zmzrdxtg6p41&type=0&duration=0&source=ios&data=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