In a cavern adjacent to Alucar is somewhat of a lost world. One of the creatures in there is tyranosaurus rex. Here are the stats I worked up for it. Let me know what you think.
STR:10 (145) WPR:6 (80)
DEX:1 (15) PER:0
AGI:3 (45) PCN:4 (55)
STA:9 (135) PWR:40
Roar: The T-Rex can roar in a way that inspires fear in smaller/lesser creatures. All who are able to hear it must make a fear check on column four. This costs 10 WPR with each use.