Firstly, I'm looking at the AC of 4, and I'm assuming that this stat is used in a descending armor class system. I assume that if I subtract 4 from either 19 or 20 (not sure which) that I will have a DCC appropriate (ascending) value?
You're subtracting 6 from 10 to get to 4, so in ascending order, add 6 to 10 to get 16 AC.
Secondly, Hit Dice. Here I see 6+1, and I'm not really sure what that means. I'm grasping that Hit Dice are something of monster levels, and that this sucker has at least 6? However the hp is only 21, that seems low but maybe it isn't...
Yeah, six hit dice, plus 1 extra hp. Not sure what dice they are using (d6's?), so not sure how to figure how they got to 21 total hp. If they were using d6's, then 21 is in the ballpark for that level of creature.
Next I see the acronym ATT, I don't know if ATT stands for something or is short for something, or what that could be, but this looks like attacks, three of them, all using a d4 and the third using two d4's at once. This seems a bit odd as well for something like a Manticore.
I think Dyson's Delve uses Labrynth Lord, and I'm not familiar with it. I'd guess this is attacks in some form...
Moving on, the next part says or spikes. But there is nothing mentioned in the text telling how to adjudicate the damage coming from this guy's 'spikes' haha, but I bet they hurt. - or poison, that would be lovely.
Mv, movement. Followed by a number of values, travel by wing or paw. But, why is a third of the movement score listed with the whole value? Not sure about that.
Jeez, I thought at first I was going to be more help.... I'm sure it must be movement on land/air and (in combat). But I've been wrong before...
Sv, Saves most likely, F for fortitude? What does the 6 imply? and what about other types of Saves?
Saves as a 6th level fighting man. Or my name's Barbara.
And lastly, "M"... Does "M" represent morale or something different? And what are the implications of M9?
M stands for Murder. That's what Hitchcock taught me.
In comparison, I see the Manticore stats listed on page 421 in the DCC rulebook, there are still some questions I have there as well. The HD are 6d8+6 (is that hp?), what does SP stand for exactly? I can infer the meaning but I didn't see it in print. I could write over the stats with actual DCC stats, but it may be helpful to know what the author intended for future conversions, as I look over d20 related works.
SP is special abilities. Like juggling, card tricks, or anything that you'd put on a CV.
I'm very appreciative of any clarity in these matters, as I mentioned I'm new to the game, but really enjoying it, and my enthusiasm is passing onto my local group of players. With your help I'll be able to better educate my group and expand the DCC community and promote the industry. Thanks for reading!
With my help, you'll be put back about six months. Still, there it is...