Lapras

Jack of all trades, master of none. Lapras has incredibly well-rounded stats and a good movepool, but it lacks both a particularly exceptional stat and a particularly exceptional movepool that separates it from its competitors. In most cases, Lanturn is superior to Lapras due to learning Thunder Wave and having STAB on the always-useful Electric attacks. Lapras has a decent Attack stat, but it isn't really enough to warrant using any physical attack on it since Ice Beam will usually cause more damage, in addition to Thunder's paralysis chance eclipsing the usefulness of Body Slam. When considering Lapras, keep in mind the things it has that Lanturn doesn't, namely Reflect and STAB Ice Beam. The transition from RBY stripped Lapras of most of the things that made it great in RBY (no Leftovers, more low-defense Pokemon, 90% Blizzard accuracy, Snorlax with 228 Special Defense), so make sure to use what little it has left.